172253225 has 12 divisors (see below), whose sum is σ = 213920460. Its totient is φ = 137592000.

The previous prime is 172253161. The next prime is 172253239. The reversal of 172253225 is 522352271.

It can be written as a sum of positive squares in 6 ways, for example, as 15202201 + 157051024 = 3899^2 + 12532^2 .

It is not a de Polignac number, because 172253225 - 2⁶ = 172253161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12611 + ... + 22439.

It is an arithmetic number, because the mean of its divisors is an integer number (17826705).

Almost surely, 2^172253225 is an apocalyptic number.

It is an amenable number.

172253225 is a deficient number, since it is larger than the sum of its proper divisors (41667235).

172253225 is an equidigital number, since it uses as much as digits as its factorization.

172253225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540 (or 10535 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 172253225 is about 13124.5276105466. The cubic root of 172253225 is about 556.4025613602.

The spelling of 172253225 in words is "one hundred seventy-two million, two hundred fifty-three thousand, two hundred twenty-five".