2120790125 has 8 divisors (see below), whose sum is σ = 2646746232. Its totient is φ = 1696632000.

The previous prime is 2120790121. The next prime is 2120790131. The reversal of 2120790125 is 5210970212.

It can be written as a sum of positive squares in 4 ways, for example, as 242954569 + 1877835556 = 15587^2 + 43334^2 .

It is not a de Polignac number, because 2120790125 - 2² = 2120790121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120790121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8483036 + ... + 8483285.

It is an arithmetic number, because the mean of its divisors is an integer number (330843279).

Almost surely, 2^2120790125 is an apocalyptic number.

2120790125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120790125 is a deficient number, since it is larger than the sum of its proper divisors (525956107).

2120790125 is an equidigital number, since it uses as much as digits as its factorization.

2120790125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16966336 (or 16966326 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2120790125 is about 46052.0371427801. The cubic root of 2120790125 is about 1284.7912321646.

The spelling of 2120790125 in words is "two billion, one hundred twenty million, seven hundred ninety thousand, one hundred twenty-five".