625597442706911 has 2 divisors, whose sum is σ = 625597442706912. Its totient is φ = 625597442706910.

The previous prime is 625597442706893. The next prime is 625597442706959. The reversal of 625597442706911 is 119607244795526.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625597442706911 is a prime.

It is a super-2 number, since 2×625597442706911² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625597442700911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312798721353455 + 312798721353456.

It is an arithmetic number, because the mean of its divisors is an integer number (312798721353456).

Almost surely, 2^{625597442706911} is an apocalyptic number.

625597442706911 is a deficient number, since it is larger than the sum of its proper divisors (1).

625597442706911 is an equidigital number, since it uses as much as digits as its factorization.

625597442706911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 228614400, while the sum is 68.

The spelling of 625597442706911 in words is "six hundred twenty-five trillion, five hundred ninety-seven billion, four hundred forty-two million, seven hundred six thousand, nine hundred eleven".