12516265 has 4 divisors (see below), whose sum is σ = 15019524. Its totient is φ = 10013008.

The previous prime is 12516263. The next prime is 12516271. The reversal of 12516265 is 56261521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56261521 = 7253 ⋅7757.

It can be written as a sum of positive squares in 2 ways, for example, as 9865881 + 2650384 = 3141^2 + 1628^2 .

It is a cyclic number.

It is not a de Polignac number, because 12516265 - 2¹ = 12516263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12516263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251622 + ... + 1251631.

It is an arithmetic number, because the mean of its divisors is an integer number (3754881).

Almost surely, 2^12516265 is an apocalyptic number.

It is an amenable number.

12516265 is a deficient number, since it is larger than the sum of its proper divisors (2503259).

12516265 is an equidigital number, since it uses as much as digits as its factorization.

12516265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503258.

The product of its digits is 3600, while the sum is 28.

The square root of 12516265 is about 3537.8333765173. The cubic root of 12516265 is about 232.1800586422.

Adding to 12516265 its reverse (56261521), we get a palindrome (68777786).

The spelling of 12516265 in words is "twelve million, five hundred sixteen thousand, two hundred sixty-five".