12520565 has 8 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 9803152.

The previous prime is 12520553. The next prime is 12520597. The reversal of 12520565 is 56502521.

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

It is a cyclic number.

It is not a de Polignac number, because 12520565 - 2⁸ = 12520309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26405 + ... + 26874.

It is an arithmetic number, because the mean of its divisors is an integer number (1918080).

Almost surely, 2^12520565 is an apocalyptic number.

It is an amenable number.

12520565 is a deficient number, since it is larger than the sum of its proper divisors (2824075).

12520565 is an equidigital number, since it uses as much as digits as its factorization.

12520565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53331.

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

The square root of 12520565 is about 3538.4410409105. The cubic root of 12520565 is about 232.2066443140.

The spelling of 12520565 in words is "twelve million, five hundred twenty thousand, five hundred sixty-five".