12525142638 has 16 divisors (see below), whose sum is σ = 25522932816. Its totient is φ = 4096272960.

The previous prime is 12525142621. The next prime is 12525142661. The reversal of 12525142638 is 83624152521.

12525142638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12525142596 and 12525142605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19693303 + ... + 19693938.

It is an arithmetic number, because the mean of its divisors is an integer number (1595183301).

Almost surely, 2^12525142638 is an apocalyptic number.

12525142638 is an abundant number, since it is smaller than the sum of its proper divisors (12997790178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12525142638 is a wasteful number, since it uses less digits than its factorization.

12525142638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39387299.

The product of its digits is 115200, while the sum is 39.

The spelling of 12525142638 in words is "twelve billion, five hundred twenty-five million, one hundred forty-two thousand, six hundred thirty-eight".