16812166725 has 36 divisors (see below), whose sum is σ = 30753168576. Its totient is φ = 8775707040.

The previous prime is 16812166717. The next prime is 16812166753. The reversal of 16812166725 is 52766121861.

16812166725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16812166725 - 2³ = 16812166717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 784327 + ... + 805476.

Almost surely, 2^16812166725 is an apocalyptic number.

16812166725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16812166725 is a deficient number, since it is larger than the sum of its proper divisors (13941001851).

16812166725 is a wasteful number, since it uses less digits than its factorization.

16812166725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589866 (or 1589858 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 16812166725 in words is "sixteen billion, eight hundred twelve million, one hundred sixty-six thousand, seven hundred twenty-five".