171456225 has 12 divisors (see below), whose sum is σ = 283474416. Its totient is φ = 91443280.

The previous prime is 171456217. The next prime is 171456239. The reversal of 171456225 is 522654171.

It is not a de Polignac number, because 171456225 - 2³ = 171456217 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1142967 + ... + 1143116.

It is an arithmetic number, because the mean of its divisors is an integer number (23622868).

Almost surely, 2^171456225 is an apocalyptic number.

171456225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171456225 is a deficient number, since it is larger than the sum of its proper divisors (112018191).

171456225 is a wasteful number, since it uses less digits than its factorization.

171456225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286096 (or 2286091 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 171456225 is about 13094.1294097775. The cubic root of 171456225 is about 555.5430930908.

The spelling of 171456225 in words is "one hundred seventy-one million, four hundred fifty-six thousand, two hundred twenty-five".