2209125900 has 36 divisors (see below), whose sum is σ = 6391738472. Its totient is φ = 589100160.

The previous prime is 2209125899. The next prime is 2209125907. The reversal of 2209125900 is 95219022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2209125907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3681577 + ... + 3682176.

Almost surely, 2^2209125900 is an apocalyptic number.

2209125900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2209125900 is an abundant number, since it is smaller than the sum of its proper divisors (4182612572).

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

2209125900 is a wasteful number, since it uses less digits than its factorization.

2209125900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363770 (or 7363763 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2209125900 is about 47001.3393426187. The cubic root of 2209125900 is about 1302.3873095329.

The spelling of 2209125900 in words is "two billion, two hundred nine million, one hundred twenty-five thousand, nine hundred".