231656025 has 48 divisors (see below), whose sum is σ = 418687488. Its totient is φ = 112512000.

The previous prime is 231656017. The next prime is 231656039. The reversal of 231656025 is 520656132.

It is not a de Polignac number, because 231656025 - 2³ = 231656017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231655983 and 231656001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36595 + ... + 42455.

It is an arithmetic number, because the mean of its divisors is an integer number (8722656).

Almost surely, 2^231656025 is an apocalyptic number.

231656025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231656025 is a deficient number, since it is larger than the sum of its proper divisors (187031463).

231656025 is a wasteful number, since it uses less digits than its factorization.

231656025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 5917 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 231656025 is about 15220.2504907114. The cubic root of 231656025 is about 614.1595367178.

The spelling of 231656025 in words is "two hundred thirty-one million, six hundred fifty-six thousand, twenty-five".