625997417 has 4 divisors (see below), whose sum is σ = 653214720. Its totient is φ = 598780116.

The previous prime is 625997387. The next prime is 625997423. The reversal of 625997417 is 714799526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 625997417 - 2¹⁴ = 625981033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625997497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13608617 + ... + 13608662.

It is an arithmetic number, because the mean of its divisors is an integer number (163303680).

Almost surely, 2^625997417 is an apocalyptic number.

It is an amenable number.

625997417 is a deficient number, since it is larger than the sum of its proper divisors (27217303).

625997417 is a wasteful number, since it uses less digits than its factorization.

625997417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27217302.

The product of its digits is 952560, while the sum is 50.

The square root of 625997417 is about 25019.9403876188. The cubic root of 625997417 is about 855.4425473651.

The spelling of 625997417 in words is "six hundred twenty-five million, nine hundred ninety-seven thousand, four hundred seventeen".