231927725 has 6 divisors (see below), whose sum is σ = 287590410. Its totient is φ = 185542160.

The previous prime is 231927721. The next prime is 231927727. The reversal of 231927725 is 527729132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3736489 + 228191236 = 1933^2 + 15106^2 .

It is not a de Polignac number, because 231927725 - 2² = 231927721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231927721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4638530 + ... + 4638579.

It is an arithmetic number, because the mean of its divisors is an integer number (47931735).

Almost surely, 2^231927725 is an apocalyptic number.

231927725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231927725 is a deficient number, since it is larger than the sum of its proper divisors (55662685).

231927725 is an equidigital number, since it uses as much as digits as its factorization.

231927725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277119 (or 9277114 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 231927725 is about 15229.1734838106. The cubic root of 231927725 is about 614.3995505506.

The spelling of 231927725 in words is "two hundred thirty-one million, nine hundred twenty-seven thousand, seven hundred twenty-five".