20125574724 has 96 divisors (see below), whose sum is σ = 51180272640. Its totient is φ = 6137417088.

The previous prime is 20125574723. The next prime is 20125574737. The reversal of 20125574724 is 42747552102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20125574723) 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, 585807 + ... + 619209.

It is an arithmetic number, because the mean of its divisors is an integer number (533127840).

Almost surely, 2^20125574724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125574724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25590136320).

20125574724 is an abundant number, since it is smaller than the sum of its proper divisors (31054697916).

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

20125574724 is a wasteful number, since it uses less digits than its factorization.

20125574724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33529 (or 33527 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 39.

The spelling of 20125574724 in words is "twenty billion, one hundred twenty-five million, five hundred seventy-four thousand, seven hundred twenty-four".