625670907 has 16 divisors (see below), whose sum is σ = 883907712. Its totient is φ = 392307840.

The previous prime is 625670897. The next prime is 625670921. The reversal of 625670907 is 709076526.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-625670907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625670977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91932 + ... + 98502.

It is an arithmetic number, because the mean of its divisors is an integer number (55244232).

Almost surely, 2^625670907 is an apocalyptic number.

625670907 is a deficient number, since it is larger than the sum of its proper divisors (258236805).

625670907 is a wasteful number, since it uses less digits than its factorization.

625670907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 625670907 is about 25013.4145410018. The cubic root of 625670907 is about 855.2937932255.

The spelling of 625670907 in words is "six hundred twenty-five million, six hundred seventy thousand, nine hundred seven".