22215225145 has 32 divisors (see below), whose sum is σ = 27614442240. Its totient is φ = 17149466880.

The previous prime is 22215225143. The next prime is 22215225157. The reversal of 22215225145 is 54152251222.

It is not a de Polignac number, because 22215225145 - 2¹ = 22215225143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22215225143) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3208227 + ... + 3215143.

It is an arithmetic number, because the mean of its divisors is an integer number (862951320).

Almost surely, 2^22215225145 is an apocalyptic number.

It is an amenable number.

22215225145 is a deficient number, since it is larger than the sum of its proper divisors (5399217095).

22215225145 is a wasteful number, since it uses less digits than its factorization.

22215225145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7185.

The product of its digits is 16000, while the sum is 31.

Adding to 22215225145 its reverse (54152251222), we get a palindrome (76367476367).

The spelling of 22215225145 in words is "twenty-two billion, two hundred fifteen million, two hundred twenty-five thousand, one hundred forty-five".