25684 has 6 divisors (see below), whose sum is σ = 44954. Its totient is φ = 12840.

The previous prime is 25679. The next prime is 25693. The reversal of 25684 is 48652.

It can be written as a sum of positive squares in only one way, i.e., 19600 + 6084 = 140^2 + 78^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207 + ... + 3214.

2²⁵⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

25684 is a deficient number, since it is larger than the sum of its proper divisors (19270).

25684 is a wasteful number, since it uses less digits than its factorization.

25684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425 (or 6423 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 25684 is about 160.2622850205. The cubic root of 25684 is about 29.5044520715.

The spelling of 25684 in words is "twenty-five thousand, six hundred eighty-four".