16222825818 has 12 divisors (see below), whose sum is σ = 35149455978. Its totient is φ = 5407608600.

The previous prime is 16222825753. The next prime is 16222825831. The reversal of 16222825818 is 81852822261.

16222825818 is a `hidden beast` number, since 1 + 62 + 2 + 2 + 8 + 2 + 581 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9950661009 + 6272164809 = 99753^2 + 79197^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450634033 + ... + 450634068.

Almost surely, 2^16222825818 is an apocalyptic number.

16222825818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16222825818 is an abundant number, since it is smaller than the sum of its proper divisors (18926630160).

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

16222825818 is a wasteful number, since it uses less digits than its factorization.

16222825818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901268109 (or 901268106 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The spelling of 16222825818 in words is "sixteen billion, two hundred twenty-two million, eight hundred twenty-five thousand, eight hundred eighteen".