12527665 has 4 divisors (see below), whose sum is σ = 15033204. Its totient is φ = 10022128.

The previous prime is 12527659. The next prime is 12527677. The reversal of 12527665 is 56672521.

12527665 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.

It can be written as a sum of positive squares in 2 ways, for example, as 9678321 + 2849344 = 3111^2 + 1688^2 .

It is a cyclic number.

It is not a de Polignac number, because 12527665 - 2²¹ = 10430513 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 12527665.

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, 1252762 + ... + 1252771.

It is an arithmetic number, because the mean of its divisors is an integer number (3758301).

Almost surely, 2^12527665 is an apocalyptic number.

It is an amenable number.

12527665 is a deficient number, since it is larger than the sum of its proper divisors (2505539).

12527665 is an equidigital number, since it uses as much as digits as its factorization.

12527665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505538.

The product of its digits is 25200, while the sum is 34.

The square root of 12527665 is about 3539.4441654022. Note that the first 3 decimals coincide. The cubic root of 12527665 is about 232.2505282665.

The spelling of 12527665 in words is "twelve million, five hundred twenty-seven thousand, six hundred sixty-five".