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What is the Square Root of 642?

The square root of 642 is 25.3377189186. Calculate another value or review the exact form, nearby perfect powers, and verification.

Answer

Square Root√642 = 25.3377189186
CalculatedNon-perfect squareIrrational
Exact form√642
Perfect squareNo
Number typeIrrational
Verification25.33771891862 ≈ 642

On this page

How the answer is calculated

We solve x2 = 642. The resulting value is x = 25.3377189186.

Verification: 25.33771891862 ≈ 642.

Simplified radical form

The square root of 642 in simplified radical form is √642.

There are no square factors that can be taken outside the radical, so √642 is already in simplest radical form.

Nearest Perfect squares

PositionBaseValue
Lower or equal25625
Upper or equal26676

Nearby square roots

NumberSquare root
√63925.2784493195
√64025.2982212813
√64125.3179778023
√64225.3377189186
√64325.3574446662
√64425.3771550809
√64525.3968501984

Number properties

Is 642 a perfect square?

No. Its square root is not a whole number.

Is the square root rational or irrational?

√642 is irrational because 642 is not a perfect square.

Visual guide

Square Root function graph

See how the result changes as the input moves across positive and negative values. Square roots are shown for non-negative inputs; cube roots continue through negative inputs.

Common questions

Frequently asked questions

It asks for the number that, when raised to the power of 2, equals 642.