12560545 has 4 divisors (see below), whose sum is σ = 15072660. Its totient is φ = 10048432.

The previous prime is 12560543. The next prime is 12560563. The reversal of 12560545 is 54506521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54506521 = 181 ⋅301141.

It can be written as a sum of positive squares in 2 ways, for example, as 3775249 + 8785296 = 1943^2 + 2964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12560545 - 2¹ = 12560543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12560543) 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 3 ways as a sum of consecutive naturals, for example, 1256050 + ... + 1256059.

It is an arithmetic number, because the mean of its divisors is an integer number (3768165).

Almost surely, 2^12560545 is an apocalyptic number.

It is an amenable number.

12560545 is a deficient number, since it is larger than the sum of its proper divisors (2512115).

12560545 is an equidigital number, since it uses as much as digits as its factorization.

12560545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512114.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 12560545 is about 3544.0859188231. The cubic root of 12560545 is about 232.4535383322.

The spelling of 12560545 in words is "twelve million, five hundred sixty thousand, five hundred forty-five".