The next number in the sequence is... 64
125 (the sequence is successive numbers cubed)
64
Should there be a 16 in there somewhere? If so next three are 36, 49 and 64...
81
The next number will be 25 because 5 times 5 = 25
81
The next number in the sequence 2, 4, 16, 64 is 256.
The next number in the sequence is... 64
The given number sequence is a series of perfect squares: 7^2, 8^2, 9^2, 10^2. Therefore, the next number in the sequence would be 11^2, which is 121.
125 (the sequence is successive numbers cubed)
You are multiplying each number in the sequence by -2. Therefore, the next number in the sequence after 32 is -64.
49
144
64
64. It's the sequence f(n) = n^3
A single number, such as 256196144100643616 does not represent a sequence.