12805975 has 36 divisors (see below), whose sum is σ = 19696656. Its totient is φ = 8087040.

The previous prime is 12805973. The next prime is 12805993. The reversal of 12805975 is 57950821.

It is not a de Polignac number, because 12805975 - 2¹ = 12805973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29359 + ... + 29791.

Almost surely, 2^12805975 is an apocalyptic number.

12805975 is a deficient number, since it is larger than the sum of its proper divisors (6890681).

12805975 is a wasteful number, since it uses less digits than its factorization.

12805975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 12805975 is about 3578.5436982102. The cubic root of 12805975 is about 233.9578113242.

The spelling of 12805975 in words is "twelve million, eight hundred five thousand, nine hundred seventy-five".