25683231 has 32 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 13655520.

The previous prime is 25683227. The next prime is 25683233. The reversal of 25683231 is 13238652.

It is not a de Polignac number, because 25683231 - 2² = 25683227 is a prime.

It is a super-2 number, since 2×25683231² = 1319256709198722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25683233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22996 + ... + 24086.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^25683231 is an apocalyptic number.

25683231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25683231 is a deficient number, since it is larger than the sum of its proper divisors (16249569).

25683231 is a wasteful number, since it uses less digits than its factorization.

25683231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179.

The product of its digits is 8640, while the sum is 30.

The square root of 25683231 is about 5067.8625671973. The cubic root of 25683231 is about 295.0415760611.

The spelling of 25683231 in words is "twenty-five million, six hundred eighty-three thousand, two hundred thirty-one".