222250145 has 16 divisors (see below), whose sum is σ = 291929232. Its totient is φ = 161429760.

The previous prime is 222250141. The next prime is 222250151. The reversal of 222250145 is 541052222.

222250145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 26697889 + 195552256 = 5167^2 + 13984^2 .

It is not a de Polignac number, because 222250145 - 2² = 222250141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222250145.

It is not an unprimeable number, because it can be changed into a prime (222250141) 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, 24062 + ... + 31991.

It is an arithmetic number, because the mean of its divisors is an integer number (18245577).

Almost surely, 2^222250145 is an apocalyptic number.

It is an amenable number.

222250145 is a deficient number, since it is larger than the sum of its proper divisors (69679087).

222250145 is a wasteful number, since it uses less digits than its factorization.

222250145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56132.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 222250145 is about 14908.0563790187. The cubic root of 222250145 is about 605.7322327421.

The spelling of 222250145 in words is "two hundred twenty-two million, two hundred fifty thousand, one hundred forty-five".