231789725 has 12 divisors (see below), whose sum is σ = 289086036. Its totient is φ = 184356480.

The previous prime is 231789709. The next prime is 231789739. The reversal of 231789725 is 527987132.

It can be written as a sum of positive squares in 6 ways, for example, as 1387684 + 230402041 = 1178^2 + 15179^2 .

It is not a de Polignac number, because 231789725 - 2⁴ = 231789709 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 22472 + ... + 31121.

It is an arithmetic number, because the mean of its divisors is an integer number (24090503).

Almost surely, 2^231789725 is an apocalyptic number.

231789725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231789725 is a deficient number, since it is larger than the sum of its proper divisors (57296311).

231789725 is a wasteful number, since it uses less digits than its factorization.

231789725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53776 (or 53771 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 231789725 is about 15224.6420319165. The cubic root of 231789725 is about 614.2776678103.

The spelling of 231789725 in words is "two hundred thirty-one million, seven hundred eighty-nine thousand, seven hundred twenty-five".