12528565 has 12 divisors (see below), whose sum is σ = 17489196. Its totient is φ = 8590848.

The previous prime is 12528563. The next prime is 12528587. The reversal of 12528565 is 56582521.

It can be written as a sum of positive squares in 2 ways, for example, as 8520561 + 4008004 = 2919^2 + 2002^2 .

It is not a de Polignac number, because 12528565 - 2¹ = 12528563 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 12528565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25324 + ... + 25813.

It is an arithmetic number, because the mean of its divisors is an integer number (1457433).

Almost surely, 2^12528565 is an apocalyptic number.

It is an amenable number.

12528565 is a deficient number, since it is larger than the sum of its proper divisors (4960631).

12528565 is an equidigital number, since it uses as much as digits as its factorization.

12528565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51156 (or 51149 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The square root of 12528565 is about 3539.5713017257. The cubic root of 12528565 is about 232.2560898368.

The spelling of 12528565 in words is "twelve million, five hundred twenty-eight thousand, five hundred sixty-five".