20025231163278 has 64 divisors (see below), whose sum is σ = 44125938120960. Its totient is φ = 6007906496000.

The previous prime is 20025231163163. The next prime is 20025231163279. The reversal of 20025231163278 is 87236113252002.

It is a super-2 number, since 2×20025231163278² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025231163279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195242533 + ... + 195345071.

It is an arithmetic number, because the mean of its divisors is an integer number (689467783140).

Almost surely, 2^{20025231163278} is an apocalyptic number.

20025231163278 is an abundant number, since it is smaller than the sum of its proper divisors (24100706957682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20025231163278 is a wasteful number, since it uses less digits than its factorization.

20025231163278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131953.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 20025231163278 in words is "twenty trillion, twenty-five billion, two hundred thirty-one million, one hundred sixty-three thousand, two hundred seventy-eight".