166265160225 has 24 divisors (see below), whose sum is σ = 275504018400. Its totient is φ = 88477240320.

The previous prime is 166265160203. The next prime is 166265160283. The reversal of 166265160225 is 522061562661.

It is a happy number.

166265160225 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166265160225 - 2⁹ = 166265159713 is a prime.

166265160225 is strictly pandigital in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2434999 + ... + 2502348.

It is an arithmetic number, because the mean of its divisors is an integer number (11479334100).

Almost surely, 2^166265160225 is an apocalyptic number.

166265160225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166265160225 is a deficient number, since it is larger than the sum of its proper divisors (109238858175).

166265160225 is a wasteful number, since it uses less digits than its factorization.

166265160225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937809 (or 4937804 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 166265160225 in words is "one hundred sixty-six billion, two hundred sixty-five million, one hundred sixty thousand, two hundred twenty-five".