This number is its own square

Square of 5 is ending by 5, square of 25 is ending by 25, square of 625 is ending by 625.

Find another three digit number whose square is ending by this same number.
Solution

Find all true four digit numbers whose square is ending by this same number.
Solution

Find all true five digit numbers whose square is ending by this same number.
Solution

Find all five digit numbers whose square is ending by this same number.
Solution

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