625939 has 2 divisors, whose sum is σ = 625940. Its totient is φ = 625938.

The previous prime is 625927. The next prime is 625943. The reversal of 625939 is 939526.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625939 - 2⁷ = 625811 is a prime.

It is not a weakly prime, because it can be changed into another prime (625909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312969 + 312970.

It is an arithmetic number, because the mean of its divisors is an integer number (312970).

2⁶²⁵⁹³⁹ is an apocalyptic number.

625939 is a deficient number, since it is larger than the sum of its proper divisors (1).

625939 is an equidigital number, since it uses as much as digits as its factorization.

625939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 34.

The square root of 625939 is about 791.1630678944. The cubic root of 625939 is about 85.5415937063.

The spelling of 625939 in words is "six hundred twenty-five thousand, nine hundred thirty-nine".