125664885 has 32 divisors (see below), whose sum is σ = 225936000. Its totient is φ = 66261888.

The previous prime is 125664881. The next prime is 125664899. The reversal of 125664885 is 588466521.

125664885 is a `hidden beast` number, since 1 + 2 + 566 + 4 + 8 + 85 = 666.

It is not a de Polignac number, because 125664885 - 2² = 125664881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 125664885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125664881) 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, 6786 + ... + 17244.

It is an arithmetic number, because the mean of its divisors is an integer number (7060500).

Almost surely, 2^125664885 is an apocalyptic number.

125664885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125664885 is a deficient number, since it is larger than the sum of its proper divisors (100271115).

125664885 is a wasteful number, since it uses less digits than its factorization.

125664885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562 (or 10556 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 125664885 is about 11210.0350133262. The cubic root of 125664885 is about 500.8849461499.

The spelling of 125664885 in words is "one hundred twenty-five million, six hundred sixty-four thousand, eight hundred eighty-five".