It looks to me like you can can relax and not fret your mind over it. They don't !
Factors of 25 . . . 1, 5, 25
Factors of 49 . . . 1, 7, 49
Factors of 121 . . . 1, 11, 121
Factors of 169 . . . 1, 13, 169
16 has an odd number of factors; its factors are 1, 2, 4, 8, and 16
1, 2, 5, 10, 25, 50 1, 3, 9, 11, 33, 99
The factors of 4,225 are 1, 5, 13, 25, 169, 325, 845, and of course, 4225.
1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 6050 2, 5 and 11 are prime.
When the number is a square of a prime number. Of course, it will have a repeated factor, but it will still only have 3 distinct factors. 4, 9, 25, 49, 121 are some examples.
4, 9, 25, 49, 121, and 169.
169
Squares of primes: 4, 9, 25, 49, 121, 169, 289 and 361.
289 (1,17,289) 169 (1,13,169) 121 (1,11,121) 49 (1,7,49) 25 (1,5,25) 9 (1,3,9)
25, 49, 121, 169
225
Composite numbers having three factors are the squares of all prime numbers. Examples are 4 (1 2 4), 9 (1 3 9), 25 (1 5 25), 49 (1 7 49), 121 (1 11 121), 169 (1 13 169), 289 (1 17 289), 361 (1 19 361), etc.
The squares of prime numbers have exactly three factors. 4 has 1, 2, and 4. 9 has 1, 3, and 9. 25 has 1, 5, and 25. 49 has 1, 7, and 49. 121 has 1, 11, and 121. 169 has 1, 13, and 169.
25% of 169 = 42.25= 25% * 169 = 25%/100% * 169 = 0.25 * 169 = 42.25
25% of 169 = 42.25= 25% * 169 = 25%/100% * 169 = 0.25 * 169 = 42.25
Possible answer 169, squares of prime numbers
16 has an odd number of factors; its factors are 1, 2, 4, 8, and 16