25663692 has 24 divisors (see below), whose sum is σ = 61157376. Its totient is φ = 8372368.

The previous prime is 25663679. The next prime is 25663697. The reversal of 25663692 is 29636652.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25663692.

It is not an unprimeable number, because it can be changed into a prime (25663697) 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, 22188 + ... + 23315.

It is an arithmetic number, because the mean of its divisors is an integer number (2548224).

Almost surely, 2^25663692 is an apocalyptic number.

It is an amenable number.

25663692 is an abundant number, since it is smaller than the sum of its proper divisors (35493684).

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

25663692 is a wasteful number, since it uses less digits than its factorization.

25663692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45557 (or 45555 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 25663692 is about 5065.9344646373. The cubic root of 25663692 is about 294.9667376075.

The spelling of 25663692 in words is "twenty-five million, six hundred sixty-three thousand, six hundred ninety-two".