25724 has 12 divisors (see below), whose sum is σ = 46200. Its totient is φ = 12528.

The previous prime is 25717. The next prime is 25733. The reversal of 25724 is 42752.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 25696 and 25705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182 + ... + 290.

It is an arithmetic number, because the mean of its divisors is an integer number (3850).

2²⁵⁷²⁴ is an apocalyptic number.

It is an amenable number.

25724 is a deficient number, since it is larger than the sum of its proper divisors (20476).

25724 is a wasteful number, since it uses less digits than its factorization.

25724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its digits is 560, while the sum is 20.

The square root of 25724 is about 160.3870318947. The cubic root of 25724 is about 29.5197607715.

The spelling of 25724 in words is "twenty-five thousand, seven hundred twenty-four".