654025631 has 16 divisors (see below), whose sum is σ = 805122048. Its totient is φ = 518918400.

The previous prime is 654025627. The next prime is 654025637. The reversal of 654025631 is 136520456.

It is not a de Polignac number, because 654025631 - 2² = 654025627 is a prime.

It is a super-2 number, since 2×654025631² = 855499052009896322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654025637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60530 + ... + 70511.

It is an arithmetic number, because the mean of its divisors is an integer number (50320128).

Almost surely, 2^654025631 is an apocalyptic number.

654025631 is a deficient number, since it is larger than the sum of its proper divisors (151096417).

654025631 is a wasteful number, since it uses less digits than its factorization.

654025631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131102.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 654025631 is about 25573.9248258847. The cubic root of 654025631 is about 868.0237128698.

The spelling of 654025631 in words is "six hundred fifty-four million, twenty-five thousand, six hundred thirty-one".