125823 has 4 divisors (see below), whose sum is σ = 167768. Its totient is φ = 83880.

The previous prime is 125821. The next prime is 125863. The reversal of 125823 is 328521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328521 = 3 ⋅109507.

It is not a de Polignac number, because 125823 - 2¹ = 125821 is a prime.

It is a D-number.

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 125823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125821) 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, 20968 + ... + 20973.

It is an arithmetic number, because the mean of its divisors is an integer number (41942).

2¹²⁵⁸²³ is an apocalyptic number.

125823 is a deficient number, since it is larger than the sum of its proper divisors (41945).

125823 is an equidigital number, since it uses as much as digits as its factorization.

125823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41944.

The product of its digits is 480, while the sum is 21.

The square root of 125823 is about 354.7153788603. The cubic root of 125823 is about 50.1094933823.

The spelling of 125823 in words is "one hundred twenty-five thousand, eight hundred twenty-three".