In the following number series, a wrong number is given. Find out the wrong number.

225, 441, 529, 625, 729, 1089

Option 1 : 529

**Given:**

225, 441, 529, 625, 729, 1089

**Calculation:**

The logic follows here is:

(15)^{2} = 225

(21)^{2} = 441

(23)^{2} = 529

(25)^{2} = 625

(27)^{2} = 729

(33)^{2} = 1089

Except 529, all numbers are square of odd composite numbers.

**∴ 529 is the wrong term.**