168856225 has 24 divisors (see below), whose sum is σ = 225556992. Its totient is φ = 125030400.

The previous prime is 168856217. The next prime is 168856267. The reversal of 168856225 is 522658861.

It is not a de Polignac number, because 168856225 - 2³ = 168856217 is a prime.

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, 13089 + ... + 22561.

It is an arithmetic number, because the mean of its divisors is an integer number (9398208).

Almost surely, 2^168856225 is an apocalyptic number.

It is an amenable number.

168856225 is a deficient number, since it is larger than the sum of its proper divisors (56700767).

168856225 is a wasteful number, since it uses less digits than its factorization.

168856225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9537 (or 9532 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 168856225 is about 12994.4690157005. The cubic root of 168856225 is about 552.7206519551.

The spelling of 168856225 in words is "one hundred sixty-eight million, eight hundred fifty-six thousand, two hundred twenty-five".