12555542522 has 16 divisors (see below), whose sum is σ = 19115859840. Its totient is φ = 6183957312.

The previous prime is 12555542521. The next prime is 12555542539. The reversal of 12555542522 is 22524555521.

It is not an unprimeable number, because it can be changed into a prime (12555542521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23348 + ... + 160175.

It is an arithmetic number, because the mean of its divisors is an integer number (1194741240).

Almost surely, 2^12555542522 is an apocalyptic number.

12555542522 is a deficient number, since it is larger than the sum of its proper divisors (6560317318).

12555542522 is a wasteful number, since it uses less digits than its factorization.

12555542522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184037.

The product of its digits is 200000, while the sum is 38.

The spelling of 12555542522 in words is "twelve billion, five hundred fifty-five million, five hundred forty-two thousand, five hundred twenty-two".