625445680 has 20 divisors (see below), whose sum is σ = 1454161392. Its totient is φ = 250178240.

The previous prime is 625445671. The next prime is 625445701. The reversal of 625445680 is 86544526.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908956 + ... + 3909115.

Almost surely, 2^625445680 is an apocalyptic number.

It is an amenable number.

625445680 is an abundant number, since it is smaller than the sum of its proper divisors (828715712).

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

625445680 is a wasteful number, since it uses less digits than its factorization.

625445680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818084 (or 7818078 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 625445680 is about 25008.9120115210. The cubic root of 625445680 is about 855.1911522725.

The spelling of 625445680 in words is "six hundred twenty-five million, four hundred forty-five thousand, six hundred eighty".