169228225 has 24 divisors (see below), whose sum is σ = 220343040. Its totient is φ = 128760000.

The previous prime is 169228223. The next prime is 169228321. The reversal of 169228225 is 522822961.

It is not a de Polignac number, because 169228225 - 2¹ = 169228223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169228223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43875 + ... + 47575.

It is an arithmetic number, because the mean of its divisors is an integer number (9180960).

Almost surely, 2^169228225 is an apocalyptic number.

It is an amenable number.

169228225 is a deficient number, since it is larger than the sum of its proper divisors (51114815).

169228225 is a wasteful number, since it uses less digits than its factorization.

169228225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801 (or 3796 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 169228225 is about 13008.7749231048. The cubic root of 169228225 is about 553.1262460738.

The spelling of 169228225 in words is "one hundred sixty-nine million, two hundred twenty-eight thousand, two hundred twenty-five".