Find the square root of 625 by the Prime Factorisation Method.

To find the square root we will do the prime factorization of 625.

$625=5\times 5\times 5\times 5$

Taking square root on both sides, we get:

$\sqrt{625}=\sqrt{5\times 5\times 5\times 5}$

$\Rightarrow \sqrt{625}=5\times 5=25$

Hence the square root of 625 is 25.