871655067725 has 12 divisors (see below), whose sum is σ = 1163994767796. Its totient is φ = 643683742080.

The previous prime is 871655067719. The next prime is 871655067733. The reversal of 871655067725 is 527760556178.

It can be written as a sum of positive squares in 6 ways, for example, as 237984938569 + 633670129156 = 487837^2 + 796034^2 .

It is not a de Polignac number, because 871655067725 - 2⁸ = 871655067469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1341007472 + ... + 1341008121.

It is an arithmetic number, because the mean of its divisors is an integer number (96999563983).

Almost surely, 2^871655067725 is an apocalyptic number.

It is an amenable number.

871655067725 is a deficient number, since it is larger than the sum of its proper divisors (292339700071).

871655067725 is a wasteful number, since it uses less digits than its factorization.

871655067725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682015616 (or 2682015611 counting only the distinct ones).

The product of its (nonzero) digits is 24696000, while the sum is 59.

The spelling of 871655067725 in words is "eight hundred seventy-one billion, six hundred fifty-five million, sixty-seven thousand, seven hundred twenty-five".