166225245 has 32 divisors (see below), whose sum is σ = 277326720. Its totient is φ = 84913920.

The previous prime is 166225237. The next prime is 166225247. The reversal of 166225245 is 542522661.

It is not a de Polignac number, because 166225245 - 2³ = 166225237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166225247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55527 + ... + 58443.

It is an arithmetic number, because the mean of its divisors is an integer number (8666460).

Almost surely, 2^166225245 is an apocalyptic number.

166225245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166225245 is a deficient number, since it is larger than the sum of its proper divisors (111101475).

166225245 is a wasteful number, since it uses less digits than its factorization.

166225245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085.

The product of its digits is 28800, while the sum is 33.

The square root of 166225245 is about 12892.8369647646. The cubic root of 166225245 is about 549.8349311799.

The spelling of 166225245 in words is "one hundred sixty-six million, two hundred twenty-five thousand, two hundred forty-five".