72631425 has 12 divisors (see below), whose sum is σ = 120084080. Its totient is φ = 38736720.

The previous prime is 72631421. The next prime is 72631439. The reversal of 72631425 is 52413627.

It is not a de Polignac number, because 72631425 - 2² = 72631421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72631392 and 72631401.

It is not an unprimeable number, because it can be changed into a prime (72631421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484135 + ... + 484284.

Almost surely, 2^72631425 is an apocalyptic number.

72631425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72631425 is a deficient number, since it is larger than the sum of its proper divisors (47452655).

72631425 is a wasteful number, since it uses less digits than its factorization.

72631425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968432 (or 968427 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 72631425 is about 8522.4072303546. The cubic root of 72631425 is about 417.2293535560.

The spelling of 72631425 in words is "seventy-two million, six hundred thirty-one thousand, four hundred twenty-five".