Here is the pattern: square the number, add two, subtract one, square the number, add two, subtract one, square the number, etc.
So we just squared the five to get twenty five. We add two and get the next number in the sequence: 27.
27
If you mean: 1 4 9 16 25 then it is 36
It is: 6 squared = 36
25, 36, 49, 64, 81, 100...
This sequence is the squaring of the numbers 1, 3, 5, and 7. The next number is 9^2 = 81.
25 is the next number that appears in that sequence.
1, 4,9, 16, 25, 36,49 this is the next three sequence po
8
4
456789
81
250 The sequence is t(n) = (22n5 - 381n4 + 2452n3 - 7191n2 + 9538n - 4416)/24 for n = 1, 2, 3, ...