625645799 has 16 divisors (see below), whose sum is σ = 645625728. Its totient is φ = 606077472.

The previous prime is 625645789. The next prime is 625645831. The reversal of 625645799 is 997546526.

625645799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625645799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625645799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625645789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412072 + ... + 1412514.

It is an arithmetic number, because the mean of its divisors is an integer number (40351608).

Almost surely, 2^625645799 is an apocalyptic number.

625645799 is a deficient number, since it is larger than the sum of its proper divisors (19979929).

625645799 is a wasteful number, since it uses less digits than its factorization.

625645799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its digits is 4082400, while the sum is 53.

The square root of 625645799 is about 25012.9126452718. The cubic root of 625645799 is about 855.2823521716.

The spelling of 625645799 in words is "six hundred twenty-five million, six hundred forty-five thousand, seven hundred ninety-nine".