25 is 52.
The only square number between 20 and 30 is 25.
25 is a perfect square occurring between 20 and 30.
All of the integers between 20 and 30 are square roots.
36 is the square number between 30 and 45
36 is a square number between 30 & 40. 36 is 6 squared.
25
20 is between 10 and 30.
The prime numbers between 20 and 30 are 23 and 29.
4
28 is a perfect number.
The number is 28.
20 and 30 are rectangular numbers (4 * 5 and 5 * 6). There are none in between them.