631938875125 has 8 divisors (see below), whose sum is σ = 788659716312. Its totient is φ = 505551100000.

The previous prime is 631938875101. The next prime is 631938875171. The reversal of 631938875125 is 521578839136.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 751527396 + 631187347729 = 27414^2 + 794473^2 .

It is not a de Polignac number, because 631938875125 - 2¹⁷ = 631938744053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631938875125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527755376 + ... + 2527755625.

It is an arithmetic number, because the mean of its divisors is an integer number (98582464539).

Almost surely, 2^631938875125 is an apocalyptic number.

It is an amenable number.

631938875125 is a deficient number, since it is larger than the sum of its proper divisors (156720841187).

631938875125 is an equidigital number, since it uses as much as digits as its factorization.

631938875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055511016 (or 5055511006 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 631938875125 in words is "six hundred thirty-one billion, nine hundred thirty-eight million, eight hundred seventy-five thousand, one hundred twenty-five".