Which of the following numbers are perfect squares?

 $961$

Which of the following numbers are perfect squares?

 $2500$

Show that the given number is a perfect square. Also, find the number whose square is the given number in the given case: 

$1156$

Show that the given number is a perfect square. Also, find the number whose square is the given number in the given case:

 $2025$

Show that the given number is a perfect square. Also, find the number whose square is the given number. 

$14641$

Show that the given number is a perfect square. Also, find the number whose square is the given number.

$4761$

Find the smallest number by which the given number must be multiplied so that the product is a perfect square: 

$23805$

Find the smallest number by which the given number must be multiplied so that the product is a perfect square: 

$12150$

Find the smallest number by which the given number must be multiplied so that the product is a perfect square: 

$7688$