525504121157 has 2 divisors, whose sum is σ = 525504121158. Its totient is φ = 525504121156.

The previous prime is 525504121147. The next prime is 525504121169. The reversal of 525504121157 is 751121405525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474464726596 + 51039394561 = 688814^2 + 225919^2 .

It is a cyclic number.

It is not a de Polignac number, because 525504121157 - 2¹⁰ = 525504120133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525504121157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525504121117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262752060578 + 262752060579.

It is an arithmetic number, because the mean of its divisors is an integer number (262752060579).

Almost surely, 2^525504121157 is an apocalyptic number.

It is an amenable number.

525504121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

525504121157 is an equidigital number, since it uses as much as digits as its factorization.

525504121157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70000, while the sum is 38.

The spelling of 525504121157 in words is "five hundred twenty-five billion, five hundred four million, one hundred twenty-one thousand, one hundred fifty-seven".