Can Gauthama Buddha be seen as a Prophet by Islam
I think that the narrow or literal answer to your question is "no" -- that the Buddha is not one of the 25 prophets according to Islam.
Would Buddhists agree to such title?
There are some forms of Buddhism, where people seem to worship or revere the Buddha as if he were a God.
But I think that perhaps most Buddhists see the Buddha as a teacher, and as a good or finished example (an exemplary human being). He taught people the "right way" -- and to that extent he is like a Prophet -- more like a Prophet than like a God.
Even so, I don't know what Christians think of Islam's describing Jesus as a Prophet -- perhaps Buddhists might feel similarly about the Buddha being described like that.
Am I right that Gauthama Budda did not teach to worship the Hindu Gods?
Did he teach not to worship them?
I think that the most of his teaching was to describe ethics, laws of nature and laws of psychology (i.e. how the mind works), and details about the proper way for Buddhist monks to behave -- so most of the doctrine isn't about God or Gods.
The doctrine tends to emphasise that people rise or fall because of their own actions, their own efforts, their own intentions -- and not because of rituals carried out by priests ("brahmans") -- see for example SN 42.6.
That's perhaps a central doctrine, and so to that extent I'd say that the doctrine has little to say about the Hindu Gods (it does say some things), and little or nothing about worshipping them.
There's a modern branch of Buddhism -- see Secular Buddhism -- which more or less ignores any supernatural aspects of the Buddhist doctrine.
There are some people of or from other (non-Buddhist) faiths -- Christians and Jews -- who study Buddhist doctrine and who apparently find it worthwhile. I think that Buddhism includes a useful description of human life -- what makes people happy or unhappy, good or bad, satisfied or unsatisfied.
But I think that Buddhism doesn't teach "there is one God" and so on (and at least to that extent isn't Islamic). Apart from that the two religions may have common ground, shared values -- the "Major virtues' listed here, for example, have analogues in Buddhism. I don't know why "obedience" isn't in that list, but that too.
Still there are different schools of Buddhism, and some of the schools put more emphasis than others on "Deities". I'm not sure whether (I doubt whether) these "Deities" are strictly analogous to what you'd call a God or Gods in another religion. For example Tara (Buddhism) says,
Tārā is a meditation deity worshiped by practitioners of the Tibetan branch of Vajrayana Buddhism to develop certain inner qualities and to understand outer, inner and secret teachings such as karuṇā (compassion), mettā (loving-kindness), and shunyata (emptiness). Tārā may more properly be understood as different aspects of the same quality, as bodhisattvas are often considered personifications of Buddhist methods.
To that extent perhaps it doesn't contradict monotheism. But I don't think that it especially teaches or endorses monotheism (except perhaps it does, in doctrine about "Buddha-nature"!).
Sorry if this answer seems full of self-contradictions -- I hope it consists of statements which are partly true.