525604008881 has 4 divisors (see below), whose sum is σ = 600690295872. Its totient is φ = 450517721892.

The previous prime is 525604008871. The next prime is 525604008889. The reversal of 525604008881 is 188800406525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-525604008881 is a prime.

It is a super-2 number, since 2×525604008881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525604008889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37543143485 + ... + 37543143498.

It is an arithmetic number, because the mean of its divisors is an integer number (150172573968).

Almost surely, 2^525604008881 is an apocalyptic number.

It is an amenable number.

525604008881 is a deficient number, since it is larger than the sum of its proper divisors (75086286991).

525604008881 is an equidigital number, since it uses as much as digits as its factorization.

525604008881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75086286990.

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 525604008881 in words is "five hundred twenty-five billion, six hundred four million, eight thousand, eight hundred eighty-one".