231878362825 has 12 divisors (see below), whose sum is σ = 294542077788. Its totient is φ = 180978233600.

The previous prime is 231878362813. The next prime is 231878362901. The reversal of 231878362825 is 528263878132.

It can be written as a sum of positive squares in 6 ways, for example, as 68671250704 + 163207112121 = 262052^2 + 403989^2 .

It is not a de Polignac number, because 231878362825 - 2¹⁹ = 231877838537 is a prime.

It is a Duffinian 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, 113110372 + ... + 113112421.

It is an arithmetic number, because the mean of its divisors is an integer number (24545173149).

Almost surely, 2^231878362825 is an apocalyptic number.

231878362825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231878362825 is a deficient number, since it is larger than the sum of its proper divisors (62663714963).

231878362825 is a wasteful number, since it uses less digits than its factorization.

231878362825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226222844 (or 226222839 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The spelling of 231878362825 in words is "two hundred thirty-one billion, eight hundred seventy-eight million, three hundred sixty-two thousand, eight hundred twenty-five".