625831458229 has 2 divisors, whose sum is σ = 625831458230. Its totient is φ = 625831458228.

The previous prime is 625831458169. The next prime is 625831458271. The reversal of 625831458229 is 922854138526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590177332900 + 35654125329 = 768230^2 + 188823^2 .

It is a cyclic number.

It is not a de Polignac number, because 625831458229 - 2¹¹ = 625831456181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625831458229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625831453229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312915729114 + 312915729115.

It is an arithmetic number, because the mean of its divisors is an integer number (312915729115).

Almost surely, 2^625831458229 is an apocalyptic number.

It is an amenable number.

625831458229 is a deficient number, since it is larger than the sum of its proper divisors (1).

625831458229 is an equidigital number, since it uses as much as digits as its factorization.

625831458229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8294400, while the sum is 55.

The spelling of 625831458229 in words is "six hundred twenty-five billion, eight hundred thirty-one million, four hundred fifty-eight thousand, two hundred twenty-nine".