631925912 has 8 divisors (see below), whose sum is σ = 1184861100. Its totient is φ = 315962952.

The previous prime is 631925911. The next prime is 631925933. The reversal of 631925912 is 219529136.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631925911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39495362 + ... + 39495377.

Almost surely, 2^631925912 is an apocalyptic number.

It is an amenable number.

631925912 is a deficient number, since it is larger than the sum of its proper divisors (552935188).

631925912 is a wasteful number, since it uses less digits than its factorization.

631925912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78990745 (or 78990741 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 631925912 is about 25138.1366055641. The cubic root of 631925912 is about 858.1345503621.

The spelling of 631925912 in words is "six hundred thirty-one million, nine hundred twenty-five thousand, nine hundred twelve".