16166143325 has 12 divisors (see below), whose sum is σ = 20244496308. Its totient is φ = 12804864000.

The previous prime is 16166143297. The next prime is 16166143333. The reversal of 16166143325 is 52334166161.

It can be written as a sum of positive squares in 6 ways, for example, as 24186724 + 16141956601 = 4918^2 + 127051^2 .

It is not a de Polignac number, because 16166143325 - 2⁶ = 16166143261 is a prime.

It is a super-2 number, since 2×16166143325² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3198692 + ... + 3203741.

It is an arithmetic number, because the mean of its divisors is an integer number (1687041359).

Almost surely, 2^16166143325 is an apocalyptic number.

It is an amenable number.

16166143325 is a deficient number, since it is larger than the sum of its proper divisors (4078352983).

16166143325 is a wasteful number, since it uses less digits than its factorization.

16166143325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402544 (or 6402539 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The spelling of 16166143325 in words is "sixteen billion, one hundred sixty-six million, one hundred forty-three thousand, three hundred twenty-five".