125011 has 4 divisors (see below), whose sum is σ = 126000. Its totient is φ = 124024.

The previous prime is 125003. The next prime is 125017. The reversal of 125011 is 110521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110521 = 79 ⋅1399.

It is a cyclic number.

It is not a de Polignac number, because 125011 - 2³ = 125003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125017) 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, 271 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

125011 is a Friedman number, since it can be written as 50^(2+1)+11, using all its digits and the basic arithmetic operations.

2¹²⁵⁰¹¹ is an apocalyptic number.

125011 is a deficient number, since it is larger than the sum of its proper divisors (989).

125011 is an equidigital number, since it uses as much as digits as its factorization.

125011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 125011 is about 353.5689466002. The cubic root of 125011 is about 50.0014666236.

Adding to 125011 its reverse (110521), we get a palindrome (235532).

The spelling of 125011 in words is "one hundred twenty-five thousand, eleven".