125019 has 12 divisors (see below), whose sum is σ = 187200. Its totient is φ = 80304.

The previous prime is 125017. The next prime is 125029. The reversal of 125019 is 910521.

It is not a de Polignac number, because 125019 - 2¹ = 125017 is a prime.

It is a super-2 number, since 2×125019² = 31259500722, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 124992 and 125010.

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 11 ways as a sum of consecutive naturals, for example, 22 + ... + 500.

It is an arithmetic number, because the mean of its divisors is an integer number (15600).

125019 is a Friedman number, since it can be written as 50^(2+1)+19, using all its digits and the basic arithmetic operations.

2¹²⁵⁰¹⁹ is an apocalyptic number.

125019 is a deficient number, since it is larger than the sum of its proper divisors (62181).

125019 is a wasteful number, since it uses less digits than its factorization.

125019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 125019 is about 353.5802596300. The cubic root of 125019 is about 50.0025332050.

The spelling of 125019 in words is "one hundred twenty-five thousand, nineteen".