25823 has 12 divisors (see below), whose sum is σ = 32832. Its totient is φ = 20160.

The previous prime is 25819. The next prime is 25841. The reversal of 25823 is 32852.

It is not a de Polignac number, because 25823 - 2² = 25819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25795 and 25804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (2736).

2²⁵⁸²³ is an apocalyptic number.

25823 is a deficient number, since it is larger than the sum of its proper divisors (7009).

25823 is a wasteful number, since it uses less digits than its factorization.

25823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 55 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 25823 is about 160.6953639655. The cubic root of 25823 is about 29.5575816811.

It can be divided in two parts, 25 and 823, that added together give a palindrome (848).

The spelling of 25823 in words is "twenty-five thousand, eight hundred twenty-three".