222265345 has 4 divisors (see below), whose sum is σ = 266718420. Its totient is φ = 177812272.

The previous prime is 222265343. The next prime is 222265403. The reversal of 222265345 is 543562222.

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 123143409 + 99121936 = 11097^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 222265345 - 2¹ = 222265343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222265343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22226530 + ... + 22226539.

It is an arithmetic number, because the mean of its divisors is an integer number (66679605).

It is a Proth number, since it is equal to 6783 ⋅ 2¹⁵ + 1 and 6783 < 2¹⁵.

Almost surely, 2^222265345 is an apocalyptic number.

It is an amenable number.

222265345 is a deficient number, since it is larger than the sum of its proper divisors (44453075).

222265345 is an equidigital number, since it uses as much as digits as its factorization.

222265345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44453074.

The product of its digits is 28800, while the sum is 31.

The square root of 222265345 is about 14908.5661617742. The cubic root of 222265345 is about 605.7460413871.

The spelling of 222265345 in words is "two hundred twenty-two million, two hundred sixty-five thousand, three hundred forty-five".