Yes.
The greatest common factor of 99 and 25 is 1. There are not other numbers that are common between them.
25 is a composite number because it has at least one positive factor other than one or itself.
The factors of 25 are: 1, 5 and 25. The prime factor is 5.
We can't narrow it down without at least one other number, but it will be either 1, 5 or 25.
5
1 or 25
1 and 25
The number 25 is not prime but composite. This is because besides itself and 1 other different factor, it has other divisors, chiefly 5. The number is a square (5 x 5), and no square can be prime.
5
5
5,5 25
25 is an odd factor of 100.