871135225 has 9 divisors (see below), whose sum is σ = 1080390703. Its totient is φ = 696790120.

The previous prime is 871135171. The next prime is 871135231. The reversal of 871135225 is 522531178.

The square root of 871135225 is 29515.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 313608681 + 557526544 = 17709^2 + 23612^2 .

It is not a de Polignac number, because 871135225 - 2²¹ = 869038073 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 144624 + ... + 150526.

Almost surely, 2^871135225 is an apocalyptic number.

871135225 is the 29515-th square number.

871135225 is the 14758-th centered octagonal number.

It is an amenable number.

871135225 is a deficient number, since it is larger than the sum of its proper divisors (209255478).

871135225 is an frugal number, since it uses more digits than its factorization.

871135225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11816 (or 5908 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The cubic root of 871135225 is about 955.0553132623.

The spelling of 871135225 in words is "eight hundred seventy-one million, one hundred thirty-five thousand, two hundred twenty-five".