20125544412 has 24 divisors (see below), whose sum is σ = 47621008512. Its totient is φ = 6614028400.

The previous prime is 20125544407. The next prime is 20125544429. The reversal of 20125544412 is 21444552102.

It is a self number, because there is not a number n which added to its sum of digits gives 20125544412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11809914 + ... + 11811617.

It is an arithmetic number, because the mean of its divisors is an integer number (1984208688).

Almost surely, 2^20125544412 is an apocalyptic number.

It is an amenable number.

20125544412 is an abundant number, since it is smaller than the sum of its proper divisors (27495464100).

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

20125544412 is a wasteful number, since it uses less digits than its factorization.

20125544412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23621609 (or 23621607 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 20125544412 in words is "twenty billion, one hundred twenty-five million, five hundred forty-four thousand, four hundred twelve".