XXVI vs twenty-six

XXVI and twenty-six both are nouns.

Word	Noun	Adjective	Verb	Adverb
XXVI	Yes	No	No	No
twenty-six	Yes	Yes	No	No

As nouns, XXVI and twenty-six are synonyms defined as:

XXVI and twenty-six: the cardinal number that is the sum of twenty-five and one

Other synonyms of XXVI include 26.

XXVI (noun)	twenty-six (noun)
the cardinal number that is the sum of twenty-five and one	the cardinal number that is the sum of twenty-five and one

XXVI (adjective)	twenty-six (adjective)
	being six more than twenty