625957 has 4 divisors (see below), whose sum is σ = 662796. Its totient is φ = 589120.

The previous prime is 625943. The next prime is 625969. The reversal of 625957 is 759526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 349281 + 276676 = 591^2 + 526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625957 is a prime.

625957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625927) 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, 18394 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (165699).

2⁶²⁵⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

625957 is a deficient number, since it is larger than the sum of its proper divisors (36839).

625957 is a wasteful number, since it uses less digits than its factorization.

625957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36838.

The product of its digits is 18900, while the sum is 34.

The square root of 625957 is about 791.1744434700. The cubic root of 625957 is about 85.5424136658.

The spelling of 625957 in words is "six hundred twenty-five thousand, nine hundred fifty-seven".