231616025 has 12 divisors (see below), whose sum is σ = 287695872. Its totient is φ = 184975440.

The previous prime is 231616013. The next prime is 231616037. The reversal of 231616025 is 520616132.

It is an interprime number because it is at equal distance from previous prime (231616013) and next prime (231616037).

It is not a de Polignac number, because 231616025 - 2⁴ = 231616009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231615985 and 231616003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7544 + ... + 22806.

It is an arithmetic number, because the mean of its divisors is an integer number (23974656).

Almost surely, 2^231616025 is an apocalyptic number.

231616025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231616025 is a deficient number, since it is larger than the sum of its proper divisors (56079847).

231616025 is a wasteful number, since it uses less digits than its factorization.

231616025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880 (or 15875 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 231616025 is about 15218.9363951624. The cubic root of 231616025 is about 614.1241857478.

The spelling of 231616025 in words is "two hundred thirty-one million, six hundred sixteen thousand, twenty-five".