171072625 has 16 divisors (see below), whose sum is σ = 214158672. Its totient is φ = 136435200.

The previous prime is 171072613. The next prime is 171072647. The reversal of 171072625 is 526270171.

It can be written as a sum of positive squares in 8 ways, for example, as 84805681 + 86266944 = 9209^2 + 9288^2 .

It is not a de Polignac number, because 171072625 - 2⁹ = 171072113 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 42187 + ... + 46063.

It is an arithmetic number, because the mean of its divisors is an integer number (13384917).

Almost surely, 2^171072625 is an apocalyptic number.

It is an amenable number.

171072625 is a deficient number, since it is larger than the sum of its proper divisors (43086047).

171072625 is an equidigital number, since it uses as much as digits as its factorization.

171072625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245 (or 4235 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 171072625 is about 13079.4734221222. The cubic root of 171072625 is about 555.1284771418.

The spelling of 171072625 in words is "one hundred seventy-one million, seventy-two thousand, six hundred twenty-five".