625213057 has 4 divisors (see below), whose sum is σ = 714529216. Its totient is φ = 535896900.

The previous prime is 625213037. The next prime is 625213081. The reversal of 625213057 is 750312526.

625213057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 750312526 = 2 ⋅375156263.

It is not a de Polignac number, because 625213057 - 2²³ = 616824449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625213037) 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, 44658069 + ... + 44658082.

It is an arithmetic number, because the mean of its divisors is an integer number (178632304).

Almost surely, 2^625213057 is an apocalyptic number.

It is an amenable number.

625213057 is a deficient number, since it is larger than the sum of its proper divisors (89316159).

625213057 is an equidigital number, since it uses as much as digits as its factorization.

625213057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89316158.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 625213057 is about 25004.2607769156. The cubic root of 625213057 is about 855.0851149264.

The spelling of 625213057 in words is "six hundred twenty-five million, two hundred thirteen thousand, fifty-seven".