25830972 has 18 divisors (see below), whose sum is σ = 65295048. Its totient is φ = 8610312.

The previous prime is 25830949. The next prime is 25831021. The reversal of 25830972 is 27903852.

It is a happy number.

25830972 is a `hidden beast` number, since 2 + 583 + 0 + 9 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×25830972² = 1334478228929568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 717527 = 25830972 / (2 + 5 + 8 + 3 + 0 + 9 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 358728 + ... + 358799.

Almost surely, 2^25830972 is an apocalyptic number.

It is an amenable number.

25830972 is an abundant number, since it is smaller than the sum of its proper divisors (39464076).

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

25830972 is a wasteful number, since it uses less digits than its factorization.

25830972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717537 (or 717532 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 25830972 is about 5082.4179285061. The cubic root of 25830972 is about 295.6062301119.

The spelling of 25830972 in words is "twenty-five million, eight hundred thirty thousand, nine hundred seventy-two".