16660225085 has 16 divisors (see below), whose sum is σ = 23379666816. Its totient is φ = 11158475328.

The previous prime is 16660225081. The next prime is 16660225093. The reversal of 16660225085 is 58052206661.

It is not a de Polignac number, because 16660225085 - 2² = 16660225081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660225081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5533454 + ... + 5536463.

It is an arithmetic number, because the mean of its divisors is an integer number (1461229176).

Almost surely, 2^16660225085 is an apocalyptic number.

It is an amenable number.

16660225085 is a deficient number, since it is larger than the sum of its proper divisors (6719441731).

16660225085 is a wasteful number, since it uses less digits than its factorization.

16660225085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069972.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 16660225085 in words is "sixteen billion, six hundred sixty million, two hundred twenty-five thousand, eighty-five".