871814225 has 12 divisors (see below), whose sum is σ = 1101448476. Its totient is φ = 684290880.

The previous prime is 871814189. The next prime is 871814227. The reversal of 871814225 is 522418178.

It can be written as a sum of positive squares in 6 ways, for example, as 59336209 + 812478016 = 7703^2 + 28504^2 .

It is not a de Polignac number, because 871814225 - 2¹² = 871810129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871814227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327662 + ... + 330311.

It is an arithmetic number, because the mean of its divisors is an integer number (91787373).

Almost surely, 2^871814225 is an apocalyptic number.

It is an amenable number.

871814225 is a deficient number, since it is larger than the sum of its proper divisors (229634251).

871814225 is a wasteful number, since it uses less digits than its factorization.

871814225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658036 (or 658031 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 871814225 is about 29526.5003852471. The cubic root of 871814225 is about 955.3033857877.

The spelling of 871814225 in words is "eight hundred seventy-one million, eight hundred fourteen thousand, two hundred twenty-five".