12564145 has 16 divisors (see below), whose sum is σ = 16980480. Its totient is φ = 8841600.

The previous prime is 12564143. The next prime is 12564151. The reversal of 12564145 is 54146521.

It is not a de Polignac number, because 12564145 - 2¹ = 12564143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12564143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1980 + ... + 5389.

It is an arithmetic number, because the mean of its divisors is an integer number (1061280).

Almost surely, 2^12564145 is an apocalyptic number.

It is an amenable number.

12564145 is a deficient number, since it is larger than the sum of its proper divisors (4416335).

12564145 is a wasteful number, since it uses less digits than its factorization.

12564145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416.

The product of its digits is 4800, while the sum is 28.

The square root of 12564145 is about 3544.5937708008. The cubic root of 12564145 is about 232.4757441840.

The spelling of 12564145 in words is "twelve million, five hundred sixty-four thousand, one hundred forty-five".