231889825 has 6 divisors (see below), whose sum is σ = 287543414. Its totient is φ = 185511840.

The previous prime is 231889817. The next prime is 231889837. The reversal of 231889825 is 528988132.

It can be written as a sum of positive squares in 3 ways, for example, as 50637456 + 181252369 = 7116^2 + 13463^2 .

It is not a de Polignac number, because 231889825 - 2³ = 231889817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4637772 + ... + 4637821.

Almost surely, 2^231889825 is an apocalyptic number.

231889825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231889825 is a deficient number, since it is larger than the sum of its proper divisors (55653589).

231889825 is an equidigital number, since it uses as much as digits as its factorization.

231889825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275603 (or 9275598 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The square root of 231889825 is about 15227.9291106834. The cubic root of 231889825 is about 614.3660817743.

The spelling of 231889825 in words is "two hundred thirty-one million, eight hundred eighty-nine thousand, eight hundred twenty-five".