12505023542 has 12 divisors (see below), whose sum is σ = 20617787148. Its totient is φ = 5684101500.

The previous prime is 12505023541. The next prime is 12505023547. The reversal of 12505023542 is 24532050521.

12505023542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12505023542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505023541) 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 5 ways as a sum of consecutive naturals, for example, 25836584 + ... + 25837067.

It is an arithmetic number, because the mean of its divisors is an integer number (1718148929).

Almost surely, 2^12505023542 is an apocalyptic number.

12505023542 is a deficient number, since it is larger than the sum of its proper divisors (8112763606).

12505023542 is a wasteful number, since it uses less digits than its factorization.

12505023542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51673675 (or 51673664 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 12505023542 in words is "twelve billion, five hundred five million, twenty-three thousand, five hundred forty-two".