Find the missing term: 1, 5, 13, 25, 41, ?

51
57
61
63

The missing term is 57.

The sequence is a list of prime numbers, with each number being 2 more than the previous number.

1 is the first prime number.
5 is 2 more than 1.
13 is 2 more than 5.
25 is 2 more than 13.
41 is 2 more than 25.
57 is 2 more than 41.

Therefore, the missing term is 57.