twenty-seven vs 27

twenty-seven and 27 both are nouns.

Word	Noun	Adjective	Verb	Adverb
twenty-seven	Yes	Yes	No	No
27	Yes	Yes	No	No

As adjectives, twenty-seven and 27 are synonyms defined as:

Other synonyms of twenty-seven include xxvii.

As nouns, twenty-seven and 27 are synonyms defined as:

twenty-seven and 27: the cardinal number that is the sum of twenty-six and one

Other synonyms of twenty-seven include XXVII.

twenty-seven (noun)	27 (noun)
the cardinal number that is the sum of twenty-six and one	the cardinal number that is the sum of twenty-six and one

twenty-seven (adjective)	27 (adjective)
being seven more than twenty	being seven more than twenty