The square of 5 is 25.

3 to the third power is 27.

Two is the fourth root of sixteen.

3 cubed is 27.

The square of any prime number is a semiprime.

"You're lucky! Your change comes to exactly 256 yen." "What do you mean by exactly?" "It's exactly two to the power of eight."

The square of seven is forty-nine.

Three squared is nine.

The square of 5 is 25.