525508411774961 has 2 divisors, whose sum is σ = 525508411774962. Its totient is φ = 525508411774960.

The previous prime is 525508411774757. The next prime is 525508411774963. The reversal of 525508411774961 is 169477114805525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453343131924736 + 72165279850225 = 21291856^2 + 8495015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525508411774961 is a prime.

Together with 525508411774963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (525508411774963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262754205887480 + 262754205887481.

It is an arithmetic number, because the mean of its divisors is an integer number (262754205887481).

Almost surely, 2^{525508411774961} is an apocalyptic number.

It is an amenable number.

525508411774961 is a deficient number, since it is larger than the sum of its proper divisors (1).

525508411774961 is an equidigital number, since it uses as much as digits as its factorization.

525508411774961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672000, while the sum is 65.

The spelling of 525508411774961 in words is "five hundred twenty-five trillion, five hundred eight billion, four hundred eleven million, seven hundred seventy-four thousand, nine hundred sixty-one".