625136683668 has 48 divisors (see below), whose sum is σ = 1673948352384. Its totient is φ = 177869352960.

The previous prime is 625136683657. The next prime is 625136683669. The reversal of 625136683668 is 866386631526.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625136683669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15419805 + ... + 15460292.

It is an arithmetic number, because the mean of its divisors is an integer number (34873924008).

Almost surely, 2^625136683668 is an apocalyptic number.

It is an amenable number.

625136683668 is an abundant number, since it is smaller than the sum of its proper divisors (1048811668716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625136683668 is a wasteful number, since it uses less digits than its factorization.

625136683668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30880352 (or 30880350 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 60.

The spelling of 625136683668 in words is "six hundred twenty-five billion, one hundred thirty-six million, six hundred eighty-three thousand, six hundred sixty-eight".