667005025 has 12 divisors (see below), whose sum is σ = 828304624. Its totient is φ = 532818000.

The previous prime is 667005019. The next prime is 667005061. The reversal of 667005025 is 520500766.

It is not a de Polignac number, because 667005025 - 2⁵ = 667004993 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2031 + ... + 36580.

Almost surely, 2^667005025 is an apocalyptic number.

It is an amenable number.

667005025 is a deficient number, since it is larger than the sum of its proper divisors (161299599).

667005025 is a wasteful number, since it uses less digits than its factorization.

667005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39312 (or 39307 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 667005025 is about 25826.4404244952. The cubic root of 667005025 is about 873.7282313551.

The spelling of 667005025 in words is "six hundred sixty-seven million, five thousand, twenty-five".