625590057 has 4 divisors (see below), whose sum is σ = 834120080. Its totient is φ = 417060036.

The previous prime is 625590037. The next prime is 625590073. The reversal of 625590057 is 750095526.

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 not a de Polignac number, because 625590057 - 2¹⁴ = 625573673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625589997 and 625590024.

It is not an unprimeable number, because it can be changed into a prime (625590037) 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, 104265007 + ... + 104265012.

It is an arithmetic number, because the mean of its divisors is an integer number (208530020).

Almost surely, 2^625590057 is an apocalyptic number.

It is an amenable number.

625590057 is a deficient number, since it is larger than the sum of its proper divisors (208530023).

625590057 is a wasteful number, since it uses less digits than its factorization.

625590057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208530022.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 625590057 is about 25011.7983559759. The cubic root of 625590057 is about 855.2569509169.

The spelling of 625590057 in words is "six hundred twenty-five million, five hundred ninety thousand, fifty-seven".