2160225209 has 2 divisors, whose sum is σ = 2160225210. Its totient is φ = 2160225208.

The previous prime is 2160225203. The next prime is 2160225227. The reversal of 2160225209 is 9025220612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2009549584 + 150675625 = 44828^2 + 12275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2160225209 - 2⁸ = 2160224953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2160225203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080112604 + 1080112605.

It is an arithmetic number, because the mean of its divisors is an integer number (1080112605).

Almost surely, 2^2160225209 is an apocalyptic number.

It is an amenable number.

2160225209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160225209 is an equidigital number, since it uses as much as digits as its factorization.

2160225209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2160225209 is about 46478.2229544117. Note that the first 3 decimals coincide. The cubic root of 2160225209 is about 1292.7057382062.

The spelling of 2160225209 in words is "two billion, one hundred sixty million, two hundred twenty-five thousand, two hundred nine".