16231395225 has 24 divisors (see below), whose sum is σ = 26841531040. Its totient is φ = 8654929920.

The previous prime is 16231395211. The next prime is 16231395233. The reversal of 16231395225 is 52259313261.

It is not a de Polignac number, because 16231395225 - 2¹² = 16231391129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386457 + ... + 426393.

Almost surely, 2^16231395225 is an apocalyptic number.

16231395225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16231395225 is a deficient number, since it is larger than the sum of its proper divisors (10610135815).

16231395225 is a wasteful number, since it uses less digits than its factorization.

16231395225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45369 (or 45364 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The spelling of 16231395225 in words is "sixteen billion, two hundred thirty-one million, three hundred ninety-five thousand, two hundred twenty-five".