222520065 has 16 divisors (see below), whose sum is σ = 361347648. Its totient is φ = 116905536.

The previous prime is 222520031. The next prime is 222520087. The reversal of 222520065 is 560025222.

It is not a de Polignac number, because 222520065 - 2⁷ = 222519937 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 109702 + ... + 111711.

It is an arithmetic number, because the mean of its divisors is an integer number (22584228).

Almost surely, 2^222520065 is an apocalyptic number.

It is an amenable number.

222520065 is a deficient number, since it is larger than the sum of its proper divisors (138827583).

222520065 is a wasteful number, since it uses less digits than its factorization.

222520065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221488.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 222520065 is about 14917.1064553418. The cubic root of 222520065 is about 605.9773515918.

Adding to 222520065 its reverse (560025222), we get a palindrome (782545287).

The spelling of 222520065 in words is "two hundred twenty-two million, five hundred twenty thousand, sixty-five".