12505042334 has 32 divisors (see below), whose sum is σ = 19698691584. Its totient is φ = 5948419680.

The previous prime is 12505042327. The next prime is 12505042349. The reversal of 12505042334 is 43324050521.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12505042297 and 12505042306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528767 + ... + 551909.

It is an arithmetic number, because the mean of its divisors is an integer number (615584112).

Almost surely, 2^12505042334 is an apocalyptic number.

12505042334 is a deficient number, since it is larger than the sum of its proper divisors (7193649250).

12505042334 is a wasteful number, since it uses less digits than its factorization.

12505042334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 12505042334 its reverse (43324050521), we get a palindrome (55829092855).

The spelling of 12505042334 in words is "twelve billion, five hundred five million, forty-two thousand, three hundred thirty-four".