1226152565 has 16 divisors (see below), whose sum is σ = 1605864960. Its totient is φ = 891347520.

The previous prime is 1226152561. The next prime is 1226152589. The reversal of 1226152565 is 5652516221.

It is not a de Polignac number, because 1226152565 - 2² = 1226152561 is a prime.

It is a super-2 number, since 2×1226152565² = 3006900225312158450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226152561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181427 + ... + 188063.

It is an arithmetic number, because the mean of its divisors is an integer number (100366560).

Almost surely, 2^1226152565 is an apocalyptic number.

It is an amenable number.

1226152565 is a deficient number, since it is larger than the sum of its proper divisors (379712395).

1226152565 is a wasteful number, since it uses less digits than its factorization.

1226152565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its digits is 36000, while the sum is 35.

The square root of 1226152565 is about 35016.4613432026. The cubic root of 1226152565 is about 1070.3229481986.

Adding to 1226152565 its reverse (5652516221), we get a palindrome (6878668786).

The spelling of 1226152565 in words is "one billion, two hundred twenty-six million, one hundred fifty-two thousand, five hundred sixty-five".