25630512 has 20 divisors (see below), whose sum is σ = 66212280. Its totient is φ = 8543488.

The previous prime is 25630511. The next prime is 25630513. The reversal of 25630512 is 21503652.

It is an interprime number because it is at equal distance from previous prime (25630511) and next prime (25630513).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (25630511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266937 + ... + 267032.

It is an arithmetic number, because the mean of its divisors is an integer number (3310614).

Almost surely, 2^25630512 is an apocalyptic number.

It is an amenable number.

25630512 is an abundant number, since it is smaller than the sum of its proper divisors (40581768).

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

25630512 is a wasteful number, since it uses less digits than its factorization.

25630512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533980 (or 533974 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25630512 is about 5062.6585901086. The cubic root of 25630512 is about 294.8395642039.

The spelling of 25630512 in words is "twenty-five million, six hundred thirty thousand, five hundred twelve".