625063979 has 4 divisors (see below), whose sum is σ = 625131984. Its totient is φ = 624995976.

The previous prime is 625063969. The next prime is 625063981. The reversal of 625063979 is 979360526.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 625063979 - 2⁸ = 625063723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625063909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17567 + ... + 39480.

It is an arithmetic number, because the mean of its divisors is an integer number (156282996).

Almost surely, 2^625063979 is an apocalyptic number.

625063979 is a deficient number, since it is larger than the sum of its proper divisors (68005).

625063979 is a wasteful number, since it uses less digits than its factorization.

625063979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68004.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 625063979 is about 25001.2795472552. The cubic root of 625063979 is about 855.0171463566.

The spelling of 625063979 in words is "six hundred twenty-five million, sixty-three thousand, nine hundred seventy-nine".