20431155325 has 24 divisors (see below), whose sum is σ = 29024759360. Its totient is φ = 13975632000.

The previous prime is 20431155289. The next prime is 20431155359. The reversal of 20431155325 is 52355113402.

It is not a de Polignac number, because 20431155325 - 2⁹ = 20431154813 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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71151 + ... + 214300.

Almost surely, 2^20431155325 is an apocalyptic number.

20431155325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20431155325 is a deficient number, since it is larger than the sum of its proper divisors (8593604035).

20431155325 is a wasteful number, since it uses less digits than its factorization.

20431155325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285877 (or 285872 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 20431155325 its reverse (52355113402), we get a palindrome (72786268727).

The spelling of 20431155325 in words is "twenty billion, four hundred thirty-one million, one hundred fifty-five thousand, three hundred twenty-five".