12309265 has 4 divisors (see below), whose sum is σ = 14771124. Its totient is φ = 9847408.

The previous prime is 12309259. The next prime is 12309277. The reversal of 12309265 is 56290321.

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 8020224 + 4289041 = 2832^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 12309265 - 2⁵ = 12309233 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1230922 + ... + 1230931.

It is an arithmetic number, because the mean of its divisors is an integer number (3692781).

Almost surely, 2^12309265 is an apocalyptic number.

It is an amenable number.

12309265 is a deficient number, since it is larger than the sum of its proper divisors (2461859).

12309265 is an equidigital number, since it uses as much as digits as its factorization.

12309265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461858.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12309265 is about 3508.4562132083. The cubic root of 12309265 is about 230.8929684125.

Adding to 12309265 its reverse (56290321), we get a palindrome (68599586).

The spelling of 12309265 in words is "twelve million, three hundred nine thousand, two hundred sixty-five".