twenty-five vs 25

twenty-five and 25 both are nouns.

Word	Noun	Adjective	Verb	Adverb
twenty-five	Yes	Yes	No	No
25	Yes	Yes	No	No

As adjectives, twenty-five and 25 are synonyms defined as:

Other synonyms of twenty-five include xxv.

As nouns, twenty-five and 25 are synonyms defined as:

twenty-five and 25: the cardinal number that is the sum of twenty-four and one

Other synonyms of twenty-five include XXV.

twenty-five (noun)	25 (noun)
the cardinal number that is the sum of twenty-four and one	the cardinal number that is the sum of twenty-four and one

twenty-five (adjective)	25 (adjective)
being five more than twenty	being five more than twenty