12249565 has 4 divisors (see below), whose sum is σ = 14699484. Its totient is φ = 9799648.

The previous prime is 12249533. The next prime is 12249599. The reversal of 12249565 is 56594221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56594221 = 1229 ⋅46049.

It can be written as a sum of positive squares in 2 ways, for example, as 8415801 + 3833764 = 2901^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 12249565 - 2⁵ = 12249533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12249565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224952 + ... + 1224961.

It is an arithmetic number, because the mean of its divisors is an integer number (3674871).

Almost surely, 2^12249565 is an apocalyptic number.

It is an amenable number.

12249565 is a deficient number, since it is larger than the sum of its proper divisors (2449919).

12249565 is an equidigital number, since it uses as much as digits as its factorization.

12249565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449918.

The product of its digits is 21600, while the sum is 34.

The square root of 12249565 is about 3499.9378565912. The cubic root of 12249565 is about 230.5190859451.

The spelling of 12249565 in words is "twelve million, two hundred forty-nine thousand, five hundred sixty-five".