25904 has 10 divisors (see below), whose sum is σ = 50220. Its totient is φ = 12944.

The previous prime is 25903. The next prime is 25913. The reversal of 25904 is 40952.

It is an Ulam number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25904.

It is not an unprimeable number, because it can be changed into a prime (25903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 794 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (5022).

2²⁵⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

25904 is a deficient number, since it is larger than the sum of its proper divisors (24316).

25904 is a wasteful number, since it uses less digits than its factorization.

25904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 25904 is about 160.9471963098. The cubic root of 25904 is about 29.5884542260.

It can be divided in two parts, 25 and 904, that added together give a palindrome (929).

The spelling of 25904 in words is "twenty-five thousand, nine hundred four".