Using prime factorization, find out the following number is perfect square or not. Also find the number whose square is given.

$1,944$

Using prime factorization, find out the following number is perfect square or not. Also find the number whose square is given.

$8,649$

Using prime factorization, find out the following number is perfect square or not. Also find the number whose square is given.

$15,625$

Using prime factorization, find out the following number is perfect square or not. Also find the number whose square is given.

$5,292$

Using prime factorization, find out the following number is perfect square or not. Also find the number whose square is given.

$415$

State whether the following number is perfect square or not? Give reason.

$7,921$

State whether the following number is perfect square or not? Give reason.

$12,288$