625416657 has 8 divisors (see below), whose sum is σ = 837629184. Its totient is φ = 415074288.

The previous prime is 625416653. The next prime is 625416677. The reversal of 625416657 is 756614526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 625416657 - 2² = 625416653 is a prime.

It is a super-2 number, since 2×625416657² = 782291989706111298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (625416653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466758 + ... + 468095.

It is an arithmetic number, because the mean of its divisors is an integer number (104703648).

Almost surely, 2^625416657 is an apocalyptic number.

It is an amenable number.

625416657 is a deficient number, since it is larger than the sum of its proper divisors (212212527).

625416657 is a wasteful number, since it uses less digits than its factorization.

625416657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935079.

The product of its digits is 302400, while the sum is 42.

The square root of 625416657 is about 25008.3317516383. The cubic root of 625416657 is about 855.1779240538.

The spelling of 625416657 in words is "six hundred twenty-five million, four hundred sixteen thousand, six hundred fifty-seven".