20431525895 has 16 divisors (see below), whose sum is σ = 27368744832. Its totient is φ = 14513724960.

The previous prime is 20431525889. The next prime is 20431525909. The reversal of 20431525895 is 59852513402.

It is not a de Polignac number, because 20431525895 - 2¹⁰ = 20431524871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4317197 + ... + 4321926.

It is an arithmetic number, because the mean of its divisors is an integer number (1710546552).

Almost surely, 2^20431525895 is an apocalyptic number.

20431525895 is a deficient number, since it is larger than the sum of its proper divisors (6937218937).

20431525895 is a wasteful number, since it uses less digits than its factorization.

20431525895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8639182.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 20431525895 in words is "twenty billion, four hundred thirty-one million, five hundred twenty-five thousand, eight hundred ninety-five".