125181 has 12 divisors (see below), whose sum is σ = 206752. Its totient is φ = 71496.

The previous prime is 125149. The next prime is 125183. The reversal of 125181 is 181521.

It is not a de Polignac number, because 125181 - 2⁵ = 125149 is a prime.

It is a super-2 number, since 2×125181² = 31340565522, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125181.

It is not an unprimeable number, because it can be changed into a prime (125183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 931 + ... + 1056.

2¹²⁵¹⁸¹ is an apocalyptic number.

It is an amenable number.

125181 is a deficient number, since it is larger than the sum of its proper divisors (81571).

125181 is a wasteful number, since it uses less digits than its factorization.

125181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000 (or 1997 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 125181 is about 353.8092706530. The cubic root of 125181 is about 50.0241216943.

The spelling of 125181 in words is "one hundred twenty-five thousand, one hundred eighty-one".