The next number is A9.
The pattern is going to be really confusing (especially since we seem to be introducing LETTERS in our numbers) to most until you realise the sequence of numbers isn't being represented in the standard Base 10. Rather, this sequence is in Base 16, or a hexadecimal system. Base 10 only uses 10 digits, so for Base 16, computer programmers represent the numbers 10-15 with letters, A to F.
The pattern is (N + 2)2, where N is the position in the sequence. So the first number is 32, or 9. The second number is 42, or 16, which in hexadecimal is represented as 10. 25 is written as 19 in hexadecimal, and so on until we reach the last number, which is 169, or A9 for short.