No.
No, 16 is not a square of a composite number. It is a square of a prime number, which is 4.
327 is composite but not a square.
composite and square
56 is composite number.
It is composite.
Yes, except for the number 1, which is a perfect square but not composite.
Every square number (except 1) is composite. Prime numbers only have two factors, one and the numbers themselves. Since square numbers also have at least the square roots as factors, they have to be composite.
It is composite, so it is not prime. It is not a square number.
4, which is the square of the prime number 2, is the smallest composite number.
composite
25 is both square and composite
The square root of a composite number is not always an irrational number. e.g. 4 is a composite number and its square root is 41/2 = 2, which is rational number.