173225305 has 32 divisors (see below), whose sum is σ = 243088128. Its totient is φ = 117216000.

The previous prime is 173225267. The next prime is 173225309. The reversal of 173225305 is 503522371.

173225305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-173225305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173225309) 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, 44955 + ... + 48655.

It is an arithmetic number, because the mean of its divisors is an integer number (7596504).

Almost surely, 2^173225305 is an apocalyptic number.

It is an amenable number.

173225305 is a deficient number, since it is larger than the sum of its proper divisors (69862823).

173225305 is a wasteful number, since it uses less digits than its factorization.

173225305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 173225305 is about 13161.5084621786. The cubic root of 173225305 is about 557.4472511374.

Adding to 173225305 its reverse (503522371), we get a palindrome (676747676).

The spelling of 173225305 in words is "one hundred seventy-three million, two hundred twenty-five thousand, three hundred five".