985825528589 has 4 divisors (see below), whose sum is σ = 1075446031200. Its totient is φ = 896205025980.

The previous prime is 985825528559. The next prime is 985825528607.

985825528589 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 985825528589 - 2²⁸ = 985557093133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985825528559) 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, 44810251289 + ... + 44810251310.

It is an arithmetic number, because the mean of its divisors is an integer number (268861507800).

Almost surely, 2^985825528589 is an apocalyptic number.

It is an amenable number.

985825528589 is a deficient number, since it is larger than the sum of its proper divisors (89620502611).

985825528589 is a wasteful number, since it uses less digits than its factorization.

985825528589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89620502610.

The product of its digits is 829440000, while the sum is 74.

The spelling of 985825528589 in words is "nine hundred eighty-five billion, eight hundred twenty-five million, five hundred twenty-eight thousand, five hundred eighty-nine".