125865271 has 12 divisors (see below), whose sum is σ = 146648232. Its totient is φ = 107712528.

The previous prime is 125865221. The next prime is 125865281. The reversal of 125865271 is 172568521.

It is not a de Polignac number, because 125865271 - 2²¹ = 123768119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125865271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125865221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36216 + ... + 39538.

It is an arithmetic number, because the mean of its divisors is an integer number (12220686).

Almost surely, 2^125865271 is an apocalyptic number.

125865271 is a deficient number, since it is larger than the sum of its proper divisors (20782961).

125865271 is an equidigital number, since it uses as much as digits as its factorization.

125865271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110 (or 4103 counting only the distinct ones).

The product of its digits is 33600, while the sum is 37.

The square root of 125865271 is about 11218.9692485540. The cubic root of 125865271 is about 501.1510428341.

The spelling of 125865271 in words is "one hundred twenty-five million, eight hundred sixty-five thousand, two hundred seventy-one".