12903265 has 4 divisors (see below), whose sum is σ = 15483924. Its totient is φ = 10322608.

The previous prime is 12903259. The next prime is 12903277. The reversal of 12903265 is 56230921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56230921 = 139 ⋅404539.

It can be written as a sum of positive squares in 2 ways, for example, as 3243601 + 9659664 = 1801^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 12903265 - 2¹⁵ = 12870497 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290322 + ... + 1290331.

It is an arithmetic number, because the mean of its divisors is an integer number (3870981).

Almost surely, 2^12903265 is an apocalyptic number.

It is an amenable number.

12903265 is a deficient number, since it is larger than the sum of its proper divisors (2580659).

12903265 is an equidigital number, since it uses as much as digits as its factorization.

12903265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580658.

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

The square root of 12903265 is about 3592.1114960424. Note that the first 3 decimals coincide. The cubic root of 12903265 is about 234.5487947100.

The spelling of 12903265 in words is "twelve million, nine hundred three thousand, two hundred sixty-five".