625313279 has 2 divisors, whose sum is σ = 625313280. Its totient is φ = 625313278.

The previous prime is 625313251. The next prime is 625313281. The reversal of 625313279 is 972313526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625313279 - 2¹² = 625309183 is a prime.

Together with 625313281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625313179) 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 as a sum of consecutive naturals, namely, 312656639 + 312656640.

It is an arithmetic number, because the mean of its divisors is an integer number (312656640).

Almost surely, 2^625313279 is an apocalyptic number.

625313279 is a deficient number, since it is larger than the sum of its proper divisors (1).

625313279 is an equidigital number, since it uses as much as digits as its factorization.

625313279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 625313279 is about 25006.2647950469. The cubic root of 625313279 is about 855.1308026913.

The spelling of 625313279 in words is "six hundred twenty-five million, three hundred thirteen thousand, two hundred seventy-nine".