871551725 has 24 divisors (see below), whose sum is σ = 1190682720. Its totient is φ = 627560000.

The previous prime is 871551697. The next prime is 871551731. The reversal of 871551725 is 527155178.

It is not a de Polignac number, because 871551725 - 2²⁴ = 854774509 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 12086 + ... + 43464.

It is an arithmetic number, because the mean of its divisors is an integer number (49611780).

Almost surely, 2^871551725 is an apocalyptic number.

It is an amenable number.

871551725 is a deficient number, since it is larger than the sum of its proper divisors (319130995).

871551725 is a wasteful number, since it uses less digits than its factorization.

871551725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31501 (or 31496 counting only the distinct ones).

The product of its digits is 98000, while the sum is 41.

The square root of 871551725 is about 29522.0548912165. The cubic root of 871551725 is about 955.2074967385.

The spelling of 871551725 in words is "eight hundred seventy-one million, five hundred fifty-one thousand, seven hundred twenty-five".