25442904 has 32 divisors (see below), whose sum is σ = 63760320. Its totient is φ = 8460576.

The previous prime is 25442891. The next prime is 25442927. The reversal of 25442904 is 40924452.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 11539 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (1992510).

Almost surely, 2^25442904 is an apocalyptic number.

25442904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25442904 is an abundant number, since it is smaller than the sum of its proper divisors (38317416).

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

25442904 is a wasteful number, since it uses less digits than its factorization.

25442904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 25442904 is about 5044.0959546781. The cubic root of 25442904 is about 294.1184214505.

The spelling of 25442904 in words is "twenty-five million, four hundred forty-two thousand, nine hundred four".