626425249 has 2 divisors, whose sum is σ = 626425250. Its totient is φ = 626425248.

The previous prime is 626425229. The next prime is 626425291. The reversal of 626425249 is 942524626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418488849 + 207936400 = 20457^2 + 14420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626425249 is a prime.

It is not a weakly prime, because it can be changed into another prime (626425229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313212624 + 313212625.

It is an arithmetic number, because the mean of its divisors is an integer number (313212625).

Almost surely, 2^626425249 is an apocalyptic number.

It is an amenable number.

626425249 is a deficient number, since it is larger than the sum of its proper divisors (1).

626425249 is an equidigital number, since it uses as much as digits as its factorization.

626425249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 626425249 is about 25028.4887478249. The cubic root of 626425249 is about 855.6373843517.

It can be divided in two parts, 6264 and 25249, that added together give a palindrome (31513).

The spelling of 626425249 in words is "six hundred twenty-six million, four hundred twenty-five thousand, two hundred forty-nine".