25630464 has 72 divisors (see below), whose sum is σ = 71229312. Its totient is φ = 8166400.

The previous prime is 25630457. The next prime is 25630489. The reversal of 25630464 is 46403652.

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, 16939 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (989296).

Almost surely, 2^25630464 is an apocalyptic number.

25630464 is a gapful number since it is divisible by the number (24) 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 25630464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35614656).

25630464 is an abundant number, since it is smaller than the sum of its proper divisors (45598848).

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

25630464 is a wasteful number, since it uses less digits than its factorization.

25630464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 25630464 is about 5062.6538495141. The cubic root of 25630464 is about 294.8393801485.

The spelling of 25630464 in words is "twenty-five million, six hundred thirty thousand, four hundred sixty-four".