2125492728 has 32 divisors (see below), whose sum is σ = 5626305360. Its totient is φ = 666821120.

The previous prime is 2125492717. The next prime is 2125492729. The reversal of 2125492728 is 8272945212.

It is a self number, because there is not a number n which added to its sum of digits gives 2125492728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125492729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604363 + ... + 2605178.

Almost surely, 2^2125492728 is an apocalyptic number.

It is an amenable number.

2125492728 is an abundant number, since it is smaller than the sum of its proper divisors (3500812632).

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

2125492728 is a wasteful number, since it uses less digits than its factorization.

2125492728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5209567 (or 5209563 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2125492728 is about 46103.0663622280. The cubic root of 2125492728 is about 1285.7401556841.

The spelling of 2125492728 in words is "two billion, one hundred twenty-five million, four hundred ninety-two thousand, seven hundred twenty-eight".