52542525138 has 16 divisors (see below), whose sum is σ = 105248997216. Its totient is φ = 17486850560.

The previous prime is 52542525137. The next prime is 52542525151. The reversal of 52542525138 is 83152524525.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 52542525138.

It is not an unprimeable number, because it can be changed into a prime (52542525137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6826956 + ... + 6834647.

It is an arithmetic number, because the mean of its divisors is an integer number (6578062326).

Almost surely, 2^52542525138 is an apocalyptic number.

52542525138 is an abundant number, since it is smaller than the sum of its proper divisors (52706472078).

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

52542525138 is a wasteful number, since it uses less digits than its factorization.

52542525138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13662249.

The product of its digits is 480000, while the sum is 42.

The spelling of 52542525138 in words is "fifty-two billion, five hundred forty-two million, five hundred twenty-five thousand, one hundred thirty-eight".