25 squared

25² = 25 × 25 = 625

To square a number, multiply it by itself. 25 squared is written 25² or 25^2, and the answer is 625.

How to work out 25 squared

• Direct: 25 × 25 = 625.
• From the previous square: 24² = 576, and 25² = 576 + (2 × 25 − 1) = 576 + 49 = 625.
• Split the number: 25 = 20 + 5, so 25² = 20² + 2 × 20 × 5 + 5² = 400 + 200 + 25 = 625.

Related

• 25 cubed = 15,625
• The square root of 625 is 25, so 625 is a perfect square.

Squares near 25

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