12729265 has 4 divisors (see below), whose sum is σ = 15275124. Its totient is φ = 10183408.

The previous prime is 12729253. The next prime is 12729271. The reversal of 12729265 is 56292721.

12729265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56292721 = 643 ⋅87547.

It can be written as a sum of positive squares in 2 ways, for example, as 4844401 + 7884864 = 2201^2 + 2808^2 .

It is a cyclic number.

It is not a de Polignac number, because 12729265 - 2⁷ = 12729137 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 12729265.

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, 1272922 + ... + 1272931.

It is an arithmetic number, because the mean of its divisors is an integer number (3818781).

Almost surely, 2^12729265 is an apocalyptic number.

It is an amenable number.

12729265 is a deficient number, since it is larger than the sum of its proper divisors (2545859).

12729265 is an equidigital number, since it uses as much as digits as its factorization.

12729265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545858.

The product of its digits is 15120, while the sum is 34.

The square root of 12729265 is about 3567.8095520922. The cubic root of 12729265 is about 233.4897262192.

It can be divided in two parts, 127 and 29265, that added together give a palindrome (29392).

The spelling of 12729265 in words is "twelve million, seven hundred twenty-nine thousand, two hundred sixty-five".