400125567231 has 16 divisors (see below), whose sum is σ = 638376973920. Its totient is φ = 246231118080.

The previous prime is 400125567223. The next prime is 400125567251. The reversal of 400125567231 is 132765521004.

400125567231 is a `hidden beast` number, since 4 + 0 + 0 + 1 + 2 + 556 + 72 + 31 = 666.

It is not a de Polignac number, because 400125567231 - 2³ = 400125567223 is a prime.

It is a super-2 number, since 2×400125567231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400125567251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569979090 + ... + 569979791.

It is an arithmetic number, because the mean of its divisors is an integer number (39898560870).

Almost surely, 2^400125567231 is an apocalyptic number.

400125567231 is a deficient number, since it is larger than the sum of its proper divisors (238251406689).

400125567231 is a wasteful number, since it uses less digits than its factorization.

400125567231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139958903 (or 1139958897 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 400125567231 in words is "four hundred billion, one hundred twenty-five million, five hundred sixty-seven thousand, two hundred thirty-one".