Crossword Clue:

to multiply a number by itself

AnswerCrossword Clue
DIVISIBLELike any number by itself
ONEAny number divided by itself
ONEAny nonzero number divided by itself
ONEResult of dividing any number by itself
ONEResult of dividing any nonzero number by itself
XIINumber pointed to by the shortest shadow on a sundial
ANNIVERSARYGIFTUnion perk found in the answer to each clue that's followed by a number