25945668 has 72 divisors (see below), whose sum is σ = 75566400. Its totient is φ = 7352640.

The previous prime is 25945651. The next prime is 25945687. The reversal of 25945668 is 86654952.

25945668 is a `hidden beast` number, since 2 + 594 + 56 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37203 + ... + 37893.

Almost surely, 2^25945668 is an apocalyptic number.

25945668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25945668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37783200).

25945668 is an abundant number, since it is smaller than the sum of its proper divisors (49620732).

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

25945668 is a wasteful number, since it uses less digits than its factorization.

25945668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 852 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 25945668 is about 5093.6890364450. The cubic root of 25945668 is about 296.0431060913.

The spelling of 25945668 in words is "twenty-five million, nine hundred forty-five thousand, six hundred sixty-eight".