525912644561 has 2 divisors, whose sum is σ = 525912644562. Its totient is φ = 525912644560.

The previous prime is 525912644339. The next prime is 525912644603. The reversal of 525912644561 is 165446219525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403423144336 + 122489500225 = 635156^2 + 349985^2 .

It is a cyclic number.

It is not a de Polignac number, because 525912644561 - 2¹⁰ = 525912643537 is a prime.

It is not a weakly prime, because it can be changed into another prime (525912644161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262956322280 + 262956322281.

It is an arithmetic number, because the mean of its divisors is an integer number (262956322281).

Almost surely, 2^525912644561 is an apocalyptic number.

It is an amenable number.

525912644561 is a deficient number, since it is larger than the sum of its proper divisors (1).

525912644561 is an equidigital number, since it uses as much as digits as its factorization.

525912644561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 50.

The spelling of 525912644561 in words is "five hundred twenty-five billion, nine hundred twelve million, six hundred forty-four thousand, five hundred sixty-one".