625635536551 has 2 divisors, whose sum is σ = 625635536552. Its totient is φ = 625635536550.

The previous prime is 625635536521. The next prime is 625635536573. The reversal of 625635536551 is 155635536526.

625635536551 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 625635536551 - 2²⁵ = 625601982119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625635536521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312817768275 + 312817768276.

It is an arithmetic number, because the mean of its divisors is an integer number (312817768276).

Almost surely, 2^625635536551 is an apocalyptic number.

625635536551 is a deficient number, since it is larger than the sum of its proper divisors (1).

625635536551 is an equidigital number, since it uses as much as digits as its factorization.

625635536551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150000, while the sum is 52.

The spelling of 625635536551 in words is "six hundred twenty-five billion, six hundred thirty-five million, five hundred thirty-six thousand, five hundred fifty-one".