625913 has 2 divisors, whose sum is σ = 625914. Its totient is φ = 625912.

The previous prime is 625909. The next prime is 625927. The reversal of 625913 is 319526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595984 + 29929 = 772^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 625913 - 2² = 625909 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (625943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312956 + 312957.

It is an arithmetic number, because the mean of its divisors is an integer number (312957).

2⁶²⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

625913 is a deficient number, since it is larger than the sum of its proper divisors (1).

625913 is an equidigital number, since it uses as much as digits as its factorization.

625913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 625913 is about 791.1466362186. The cubic root of 625913 is about 85.5404092925.

The spelling of 625913 in words is "six hundred twenty-five thousand, nine hundred thirteen".