631881262625 has 32 divisors (see below), whose sum is σ = 831021894144. Its totient is φ = 478738920000.

The previous prime is 631881262591. The next prime is 631881262643. The reversal of 631881262625 is 526262188136.

It is not a de Polignac number, because 631881262625 - 2¹⁰ = 631881261601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797669 + ... + 1378418.

It is an arithmetic number, because the mean of its divisors is an integer number (25969434192).

Almost surely, 2^631881262625 is an apocalyptic number.

It is an amenable number.

631881262625 is a deficient number, since it is larger than the sum of its proper divisors (199140631519).

631881262625 is a wasteful number, since it uses less digits than its factorization.

631881262625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176226 (or 2176216 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The spelling of 631881262625 in words is "six hundred thirty-one billion, eight hundred eighty-one million, two hundred sixty-two thousand, six hundred twenty-five".