25614656 has 56 divisors (see below), whose sum is σ = 54147720. Its totient is φ = 11999232.

The previous prime is 25614653. The next prime is 25614661. The reversal of 25614656 is 65641652.

It can be written as a sum of positive squares in 4 ways, for example, as 9486400 + 16128256 = 3080^2 + 4016^2 .

It is a super-2 number, since 2×25614656² = 1312221203996672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25614653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68486 + ... + 68858.

Almost surely, 2^25614656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25614656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27073860).

25614656 is an abundant number, since it is smaller than the sum of its proper divisors (28533064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25614656 is a wasteful number, since it uses less digits than its factorization.

25614656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 441 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 25614656 is about 5061.0923722058. The cubic root of 25614656 is about 294.7787520425.

It can be divided in two parts, 25 and 614656, that multiplied together give a square (15366400 = 3920²).

The spelling of 25614656 in words is "twenty-five million, six hundred fourteen thousand, six hundred fifty-six".