2125190920 has 16 divisors (see below), whose sum is σ = 4781679660. Its totient is φ = 850076352.

The previous prime is 2125190909. The next prime is 2125190923. The reversal of 2125190920 is 290915212.

It can be written as a sum of positive squares in 2 ways, for example, as 2009370276 + 115820644 = 44826^2 + 10762^2 .

It is not an unprimeable number, because it can be changed into a prime (2125190923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26564847 + ... + 26564926.

Almost surely, 2^2125190920 is an apocalyptic number.

2125190920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125190920 is an abundant number, since it is smaller than the sum of its proper divisors (2656488740).

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

2125190920 is a wasteful number, since it uses less digits than its factorization.

2125190920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53129784 (or 53129780 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 2125190920 is about 46099.7930581039. The cubic root of 2125190920 is about 1285.6792968491.

The spelling of 2125190920 in words is "two billion, one hundred twenty-five million, one hundred ninety thousand, nine hundred twenty".