164673225 has 18 divisors (see below), whose sum is σ = 294948446. Its totient is φ = 87825600.

The previous prime is 164673217. The next prime is 164673227. The reversal of 164673225 is 522376461.

164673225 is a `hidden beast` number, since 1 + 646 + 7 + 3 + 2 + 2 + 5 = 666.

164673225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 11309769 + 153363456 = 3363^2 + 12384^2 .

It is not a de Polignac number, because 164673225 - 2³ = 164673217 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164673225.

It is not an unprimeable number, because it can be changed into a prime (164673227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 365716 + ... + 366165.

Almost surely, 2^164673225 is an apocalyptic number.

164673225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164673225 is a deficient number, since it is larger than the sum of its proper divisors (130275221).

164673225 is a wasteful number, since it uses less digits than its factorization.

164673225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731897 (or 731889 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 164673225 is about 12832.5065751006. The cubic root of 164673225 is about 548.1183356165.

The spelling of 164673225 in words is "one hundred sixty-four million, six hundred seventy-three thousand, two hundred twenty-five".