625342779 has 12 divisors (see below), whose sum is σ = 910169832. Its totient is φ = 413712000.

The previous prime is 625342771. The next prime is 625342789. The reversal of 625342779 is 977243526.

It is not a de Polignac number, because 625342779 - 2³ = 625342771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625342771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264022 + ... + 266379.

It is an arithmetic number, because the mean of its divisors is an integer number (75847486).

Almost surely, 2^625342779 is an apocalyptic number.

625342779 is a deficient number, since it is larger than the sum of its proper divisors (284827053).

625342779 is a wasteful number, since it uses less digits than its factorization.

625342779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530538 (or 530535 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 625342779 is about 25006.8546402781. The cubic root of 625342779 is about 855.1442497974.

The spelling of 625342779 in words is "six hundred twenty-five million, three hundred forty-two thousand, seven hundred seventy-nine".