20425656512832 has 28 divisors (see below), whose sum is σ = 54042882857376. Its totient is φ = 6808552170880.

The previous prime is 20425656512791. The next prime is 20425656512843. The reversal of 20425656512832 is 23821565652402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53191813644 + ... + 53191814027.

It is an arithmetic number, because the mean of its divisors is an integer number (1930102959192).

Almost surely, 2^{20425656512832} is an apocalyptic number.

It is an amenable number.

20425656512832 is an abundant number, since it is smaller than the sum of its proper divisors (33617226344544).

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

20425656512832 is a wasteful number, since it uses less digits than its factorization.

20425656512832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106383627686 (or 106383627676 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 20425656512832 in words is "twenty trillion, four hundred twenty-five billion, six hundred fifty-six million, five hundred twelve thousand, eight hundred thirty-two".