525440597959 has 4 divisors (see below), whose sum is σ = 526066868880. Its totient is φ = 524814327040.

The previous prime is 525440597923. The next prime is 525440597971. The reversal of 525440597959 is 959795044525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525440597959 - 2⁹ = 525440597447 is a prime.

It is a super-2 number, since 2×525440597959² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525440597959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525440597989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313134202 + ... + 313135879.

It is an arithmetic number, because the mean of its divisors is an integer number (131516717220).

Almost surely, 2^525440597959 is an apocalyptic number.

525440597959 is a deficient number, since it is larger than the sum of its proper divisors (626270921).

525440597959 is an equidigital number, since it uses as much as digits as its factorization.

525440597959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626270920.

The product of its (nonzero) digits is 102060000, while the sum is 64.

The spelling of 525440597959 in words is "five hundred twenty-five billion, four hundred forty million, five hundred ninety-seven thousand, nine hundred fifty-nine".