2166225415 has 16 divisors (see below), whose sum is σ = 2645798400. Its totient is φ = 1702145952.

The previous prime is 2166225389. The next prime is 2166225419. The reversal of 2166225415 is 5145226612.

It is a cyclic number.

It is not a de Polignac number, because 2166225415 - 2¹³ = 2166217223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166225419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452806 + ... + 457564.

It is an arithmetic number, because the mean of its divisors is an integer number (165362400).

Almost surely, 2^2166225415 is an apocalyptic number.

2166225415 is a deficient number, since it is larger than the sum of its proper divisors (479572985).

2166225415 is a wasteful number, since it uses less digits than its factorization.

2166225415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366.

The product of its digits is 28800, while the sum is 34.

The square root of 2166225415 is about 46542.7267679924. The cubic root of 2166225415 is about 1293.9014978447.

The spelling of 2166225415 in words is "two billion, one hundred sixty-six million, two hundred twenty-five thousand, four hundred fifteen".