2129990225 has 36 divisors (see below), whose sum is σ = 2910178320. Its totient is φ = 1545324000.

The previous prime is 2129990207. The next prime is 2129990281. The reversal of 2129990225 is 5220999212.

It is not a de Polignac number, because 2129990225 - 2¹² = 2129986129 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 2089766 + ... + 2090784.

Almost surely, 2^2129990225 is an apocalyptic number.

2129990225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2129990225 is a deficient number, since it is larger than the sum of its proper divisors (780188095).

2129990225 is a wasteful number, since it uses less digits than its factorization.

2129990225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 2129990225 is about 46151.8171364899. The cubic root of 2129990225 is about 1286.6463829911.

The spelling of 2129990225 in words is "two billion, one hundred twenty-nine million, nine hundred ninety thousand, two hundred twenty-five".