12505863 has 16 divisors (see below), whose sum is σ = 17729280. Its totient is φ = 7814016.

The previous prime is 12505853. The next prime is 12505879. The reversal of 12505863 is 36850521.

It is not a de Polignac number, because 12505863 - 2⁶ = 12505799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12505863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505853) 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, 19006 + ... + 19652.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^12505863 is an apocalyptic number.

12505863 is a deficient number, since it is larger than the sum of its proper divisors (5223417).

12505863 is a wasteful number, since it uses less digits than its factorization.

12505863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12505863 is about 3536.3629621406. The cubic root of 12505863 is about 232.1157208562.

The spelling of 12505863 in words is "twelve million, five hundred five thousand, eight hundred sixty-three".