25663630 has 16 divisors (see below), whose sum is σ = 48203424. Its totient is φ = 9819040.

The previous prime is 25663621. The next prime is 25663657. The reversal of 25663630 is 3636652.

It is a junction number, because it is equal to n+sod(n) for n = 25663592 and 25663601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55561 + ... + 56020.

It is an arithmetic number, because the mean of its divisors is an integer number (3012714).

Almost surely, 2^25663630 is an apocalyptic number.

25663630 is a deficient number, since it is larger than the sum of its proper divisors (22539794).

25663630 is a wasteful number, since it uses less digits than its factorization.

25663630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111611.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 25663630 is about 5065.9283453282. The cubic root of 25663630 is about 294.9665000741.

The spelling of 25663630 in words is "twenty-five million, six hundred sixty-three thousand, six hundred thirty".