625533555616668 has 48 divisors (see below), whose sum is σ = 1665584842793760. Its totient is φ = 202875747766272.

The previous prime is 625533555616579. The next prime is 625533555616709. The reversal of 625533555616668 is 866616555335526.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 625533555616596 and 625533555616605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78269960421 + ... + 78269968412.

It is an arithmetic number, because the mean of its divisors is an integer number (34699684224870).

Almost surely, 2^{625533555616668} is an apocalyptic number.

It is an amenable number.

625533555616668 is an abundant number, since it is smaller than the sum of its proper divisors (1040051287177092).

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

625533555616668 is a wasteful number, since it uses less digits than its factorization.

625533555616668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156539928883 (or 156539928875 counting only the distinct ones).

The product of its digits is 3499200000, while the sum is 72.

The spelling of 625533555616668 in words is "six hundred twenty-five trillion, five hundred thirty-three billion, five hundred fifty-five million, six hundred sixteen thousand, six hundred sixty-eight".