12807525889 has 4 divisors (see below), whose sum is σ = 12819244756. Its totient is φ = 12795807024.

The previous prime is 12807525799. The next prime is 12807525893. The reversal of 12807525889 is 98852570821.

12807525889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11186658289 + 1620867600 = 105767^2 + 40260^2 .

It is a cyclic number.

It is not a de Polignac number, because 12807525889 - 2²¹ = 12805428737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12807525989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5857794 + ... + 5859979.

It is an arithmetic number, because the mean of its divisors is an integer number (3204811189).

Almost surely, 2^12807525889 is an apocalyptic number.

It is an amenable number.

12807525889 is a deficient number, since it is larger than the sum of its proper divisors (11718867).

12807525889 is a wasteful number, since it uses less digits than its factorization.

12807525889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11718866.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 12807525889 in words is "twelve billion, eight hundred seven million, five hundred twenty-five thousand, eight hundred eighty-nine".