8725191 has 4 divisors (see below), whose sum is σ = 11633592. Its totient is φ = 5816792.

The previous prime is 8725183. The next prime is 8725207. The reversal of 8725191 is 1915278.

8725191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8725191 - 2³ = 8725183 is a prime.

It is a super-2 number, since 2×8725191² = 152257915972962, which contains 22 as substring.

8725191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454196 + ... + 1454201.

It is an arithmetic number, because the mean of its divisors is an integer number (2908398).

Almost surely, 2^8725191 is an apocalyptic number.

8725191 is a deficient number, since it is larger than the sum of its proper divisors (2908401).

8725191 is a wasteful number, since it uses less digits than its factorization.

8725191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908400.

The product of its digits is 5040, while the sum is 33.

The square root of 8725191 is about 2953.8434284843. The cubic root of 8725191 is about 205.8693283205.

The spelling of 8725191 in words is "eight million, seven hundred twenty-five thousand, one hundred ninety-one".