667390125 has 32 divisors (see below), whose sum is σ = 1112477184. Its totient is φ = 355320000.

The previous prime is 667390121. The next prime is 667390133. The reversal of 667390125 is 521093766.

It is not a de Polignac number, because 667390125 - 2² = 667390121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667390121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282700 + ... + 285050.

It is an arithmetic number, because the mean of its divisors is an integer number (34764912).

Almost surely, 2^667390125 is an apocalyptic number.

It is an amenable number.

667390125 is a deficient number, since it is larger than the sum of its proper divisors (445087059).

667390125 is a wasteful number, since it uses less digits than its factorization.

667390125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 667390125 is about 25833.8948863697. The cubic root of 667390125 is about 873.8963500324.

The spelling of 667390125 in words is "six hundred sixty-seven million, three hundred ninety thousand, one hundred twenty-five".