625756399 has 2 divisors, whose sum is σ = 625756400. Its totient is φ = 625756398.

The previous prime is 625756367. The next prime is 625756427. The reversal of 625756399 is 993657526.

625756399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625756399 - 2⁵ = 625756367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625756199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312878199 + 312878200.

It is an arithmetic number, because the mean of its divisors is an integer number (312878200).

Almost surely, 2^625756399 is an apocalyptic number.

625756399 is a deficient number, since it is larger than the sum of its proper divisors (1).

625756399 is an equidigital number, since it uses as much as digits as its factorization.

625756399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 52.

The square root of 625756399 is about 25015.1234056520. The cubic root of 625756399 is about 855.3327473818.

The spelling of 625756399 in words is "six hundred twenty-five million, seven hundred fifty-six thousand, three hundred ninety-nine".