12505265 has 8 divisors (see below), whose sum is σ = 15212328. Its totient is φ = 9866880.

The previous prime is 12505247. The next prime is 12505267. The reversal of 12505265 is 56250521.

It can be written as a sum of positive squares in 4 ways, for example, as 5387041 + 7118224 = 2321^2 + 2668^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12505265 - 2¹² = 12501169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12505267) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16766 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (1901541).

Almost surely, 2^12505265 is an apocalyptic number.

It is an amenable number.

12505265 is a deficient number, since it is larger than the sum of its proper divisors (2707063).

12505265 is an equidigital number, since it uses as much as digits as its factorization.

12505265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34339.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 12505265 is about 3536.2784109852. The cubic root of 12505265 is about 232.1120210605.

Adding to 12505265 its reverse (56250521), we get a palindrome (68755786).

The spelling of 12505265 in words is "twelve million, five hundred five thousand, two hundred sixty-five".