125911 has 8 divisors (see below), whose sum is σ = 134064. Its totient is φ = 118080.

The previous prime is 125899. The next prime is 125921. The reversal of 125911 is 119521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125911 - 2⁹ = 125399 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125921) 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 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2¹²⁵⁹¹¹ is an apocalyptic number.

125911 is a deficient number, since it is larger than the sum of its proper divisors (8153).

125911 is an equidigital number, since it uses as much as digits as its factorization.

125911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161.

The product of its digits is 90, while the sum is 19.

The square root of 125911 is about 354.8394002926. The cubic root of 125911 is about 50.1211727726.

The spelling of 125911 in words is "one hundred twenty-five thousand, nine hundred eleven".