231572725 has 12 divisors (see below), whose sum is σ = 304041924. Its totient is φ = 174360320.

The previous prime is 231572723. The next prime is 231572729. The reversal of 231572725 is 527275132.

It can be written as a sum of positive squares in 6 ways, for example, as 106929 + 231465796 = 327^2 + 15214^2 .

It is not a de Polignac number, because 231572725 - 2¹ = 231572723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231572723) 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, 272014 + ... + 272863.

It is an arithmetic number, because the mean of its divisors is an integer number (25336827).

Almost surely, 2^231572725 is an apocalyptic number.

231572725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231572725 is a deficient number, since it is larger than the sum of its proper divisors (72469199).

231572725 is a wasteful number, since it uses less digits than its factorization.

231572725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544904 (or 544899 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 231572725 is about 15217.5137588241. The cubic root of 231572725 is about 614.0859137349.

The spelling of 231572725 in words is "two hundred thirty-one million, five hundred seventy-two thousand, seven hundred twenty-five".