12500042500013 has 16 divisors (see below), whose sum is σ = 12856518529536. Its totient is φ = 12146602814640.

The previous prime is 12500042499979. The next prime is 12500042500039. The reversal of 12500042500013 is 31000524000521.

It is a cyclic number.

It is not a de Polignac number, because 12500042500013 - 2²⁶ = 12499975391149 is a prime.

It is a super-2 number, since 2×12500042500013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500042500213) 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, 22434506 + ... + 22984932.

It is an arithmetic number, because the mean of its divisors is an integer number (803532408096).

Almost surely, 2^{12500042500013} is an apocalyptic number.

It is an amenable number.

12500042500013 is a deficient number, since it is larger than the sum of its proper divisors (356476029523).

12500042500013 is a wasteful number, since it uses less digits than its factorization.

12500042500013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553184.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 12500042500013 its reverse (31000524000521), we get a palindrome (43500566500534).

The spelling of 12500042500013 in words is "twelve trillion, five hundred billion, forty-two million, five hundred thousand, thirteen".