825040171 has 12 divisors (see below), whose sum is σ = 868681800. Its totient is φ = 783109440.

The previous prime is 825040163. The next prime is 825040187. The reversal of 825040171 is 171040528.

825040171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 825040171 - 2³ = 825040163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825040121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48780 + ... + 63478.

It is an arithmetic number, because the mean of its divisors is an integer number (72390150).

Almost surely, 2^825040171 is an apocalyptic number.

825040171 is a deficient number, since it is larger than the sum of its proper divisors (43641629).

825040171 is a wasteful number, since it uses less digits than its factorization.

825040171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14814 (or 14777 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 825040171 is about 28723.5125115296. The cubic root of 825040171 is about 937.9039500336.

Adding to 825040171 its reverse (171040528), we get a palindrome (996080699).

The spelling of 825040171 in words is "eight hundred twenty-five million, forty thousand, one hundred seventy-one".