Is 638 a perfect square?

No, 638 is not a perfect square. Its square root is irrational.

What is 25.2586618806 squared?

25.2586618806 squared is approximately 638. (25.2586618806)² ≈ 638

√638 = 25.2586618806. 638 is not a perfect square; the result is irrational.

Instant answer with step-by-step solution

√638 = 25.2586618806

√638 = 25.2586618806

⚠ 638 is not a perfect square — result rounded to 10 significant figures

We need to find √638 — a number that when multiplied by itself equals 638.
638 is not a perfect square. Its square root is irrational.
It falls between √625 = 25 and √676 = 26.
Using the formula √N = N^(1/2): √638 = 638^0.5 = 25.2586618806
Verification: 25.2586618806 × 25.2586618806 ≈ 638 ✓ (rounded to 10 significant figures)

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