667407474725 has 12 divisors (see below), whose sum is σ = 828524666340. Its totient is φ = 533319916800.

The previous prime is 667407474707. The next prime is 667407474733. The reversal of 667407474725 is 527474704766.

It can be written as a sum of positive squares in 6 ways, for example, as 150390391204 + 517017083521 = 387802^2 + 719039^2 .

It is not a de Polignac number, because 667407474725 - 2⁸ = 667407474469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15129110 + ... + 15173159.

It is an arithmetic number, because the mean of its divisors is an integer number (69043722195).

Almost surely, 2^667407474725 is an apocalyptic number.

It is an amenable number.

667407474725 is a deficient number, since it is larger than the sum of its proper divisors (161117191615).

667407474725 is a wasteful number, since it uses less digits than its factorization.

667407474725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303160 (or 30303155 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 59.

The spelling of 667407474725 in words is "six hundred sixty-seven billion, four hundred seven million, four hundred seventy-four thousand, seven hundred twenty-five".