625584979 has 2 divisors, whose sum is σ = 625584980. Its totient is φ = 625584978.

The previous prime is 625584959. The next prime is 625584983. The reversal of 625584979 is 979485526.

625584979 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 625584979 - 2⁷ = 625584851 is a prime.

It is a super-4 number, since 4×625584979⁴ (a number of 36 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (625584959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312792489 + 312792490.

It is an arithmetic number, because the mean of its divisors is an integer number (312792490).

Almost surely, 2^625584979 is an apocalyptic number.

625584979 is a deficient number, since it is larger than the sum of its proper divisors (1).

625584979 is an equidigital number, since it uses as much as digits as its factorization.

625584979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 625584979 is about 25011.6968436770. The cubic root of 625584979 is about 855.2546368314.

The spelling of 625584979 in words is "six hundred twenty-five million, five hundred eighty-four thousand, nine hundred seventy-nine".