222505305 has 16 divisors (see below), whose sum is σ = 388373184. Its totient is φ = 107881280.

The previous prime is 222505301. The next prime is 222505351. The reversal of 222505305 is 503505222.

It is not a de Polignac number, because 222505305 - 2² = 222505301 is a prime.

It is a super-2 number, since 2×222505305² = 99017221506286050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222505301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 674094 + ... + 674423.

It is an arithmetic number, because the mean of its divisors is an integer number (24273324).

Almost surely, 2^222505305 is an apocalyptic number.

It is an amenable number.

222505305 is a deficient number, since it is larger than the sum of its proper divisors (165867879).

222505305 is a wasteful number, since it uses less digits than its factorization.

222505305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348536.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 222505305 is about 14916.6117131204. The cubic root of 222505305 is about 605.9639529147.

The spelling of 222505305 in words is "two hundred twenty-two million, five hundred five thousand, three hundred five".