222255305 has 4 divisors (see below), whose sum is σ = 266706372. Its totient is φ = 177804240.

The previous prime is 222255287. The next prime is 222255307. The reversal of 222255305 is 503552222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148913209 + 73342096 = 12203^2 + 8564^2 .

It is not a de Polignac number, because 222255305 - 2²⁰ = 221206729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222255307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22225526 + ... + 22225535.

It is an arithmetic number, because the mean of its divisors is an integer number (66676593).

Almost surely, 2^222255305 is an apocalyptic number.

It is an amenable number.

222255305 is a deficient number, since it is larger than the sum of its proper divisors (44451067).

222255305 is an equidigital number, since it uses as much as digits as its factorization.

222255305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44451066.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 222255305 is about 14908.2294388033. The cubic root of 222255305 is about 605.7369204843.

The spelling of 222255305 in words is "two hundred twenty-two million, two hundred fifty-five thousand, three hundred five".