12015265 has 4 divisors (see below), whose sum is σ = 14418324. Its totient is φ = 9612208.

The previous prime is 12015257. The next prime is 12015271. The reversal of 12015265 is 56251021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56251021 = 5059 ⋅11119.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 10556001 = 1208^2 + 3249^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015265 - 2³ = 12015257 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1201522 + ... + 1201531.

It is an arithmetic number, because the mean of its divisors is an integer number (3604581).

Almost surely, 2^12015265 is an apocalyptic number.

It is an amenable number.

12015265 is a deficient number, since it is larger than the sum of its proper divisors (2403059).

12015265 is an equidigital number, since it uses as much as digits as its factorization.

12015265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403058.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12015265 is about 3466.3042278484. The cubic root of 12015265 is about 229.0398855032.

Adding to 12015265 its reverse (56251021), we get a palindrome (68266286).

The spelling of 12015265 in words is "twelve million, fifteen thousand, two hundred sixty-five".