Last Updated：2025/11/23

(mathematics) A number whose decimal representation of its square ends in itself.

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automorphic number

Source Word

automorphic number

Noun

(mathematics) A number whose decimal representation of its square ends in itself.

Japanese Meaning

平方した値の末尾が元の数と一致する数。 / 例えば76の場合、76^2 = 5776となり、末尾が76になる数。

An automorphic number like 625 is interesting because its square, 390625, ends with 625.

平方の末尾が自分自身になる数（例えば625）は興味深く、その平方390625は末尾が625になります。

Sense（1）

(mathematics) A number whose decimal representation of its square ends in itself.

5 is an automorphic number because 5² = 25, which ends in 5.

automorphic numbers

（ plural ）