2222166605225 has 12 divisors (see below), whose sum is σ = 3149127532224. Its totient is φ = 1523771386320.

The previous prime is 2222166605179. The next prime is 2222166605249. The reversal of 2222166605225 is 5225066612222.

It is not a de Polignac number, because 2222166605225 - 2¹⁰ = 2222166604201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6349047269 + ... + 6349047618.

It is an arithmetic number, because the mean of its divisors is an integer number (262427294352).

Almost surely, 2^{2222166605225} is an apocalyptic number.

2222166605225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2222166605225 is a deficient number, since it is larger than the sum of its proper divisors (926960926999).

2222166605225 is a wasteful number, since it uses less digits than its factorization.

2222166605225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12698094904 (or 12698094899 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 2222166605225 in words is "two trillion, two hundred twenty-two billion, one hundred sixty-six million, six hundred five thousand, two hundred twenty-five".