1223254565 has 32 divisors (see below), whose sum is σ = 1609843200. Its totient is φ = 886878720.

The previous prime is 1223254553. The next prime is 1223254579. The reversal of 1223254565 is 5654523221.

It is not a de Polignac number, because 1223254565 - 2¹⁶ = 1223189029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1082921 + ... + 1084049.

It is an arithmetic number, because the mean of its divisors is an integer number (50307600).

Almost surely, 2^1223254565 is an apocalyptic number.

It is an amenable number.

1223254565 is a deficient number, since it is larger than the sum of its proper divisors (386588635).

1223254565 is a wasteful number, since it uses less digits than its factorization.

1223254565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437.

The product of its digits is 72000, while the sum is 35.

The square root of 1223254565 is about 34975.0563259017. The cubic root of 1223254565 is about 1069.4790502763.

Adding to 1223254565 its reverse (5654523221), we get a palindrome (6877777786).

The spelling of 1223254565 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred sixty-five".