125623 has 4 divisors (see below), whose sum is σ = 126360. Its totient is φ = 124888.

The previous prime is 125621. The next prime is 125627. The reversal of 125623 is 326521.

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: 326521 = 13 ⋅25117.

It is a cyclic number.

It is not a de Polignac number, because 125623 - 2¹ = 125621 is a prime.

It is a super-2 number, since 2×125623² = 31562276258, which contains 22 as substring.

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 125623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125621) 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, 36 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (31590).

2¹²⁵⁶²³ is an apocalyptic number.

125623 is a deficient number, since it is larger than the sum of its proper divisors (737).

125623 is an equidigital number, since it uses as much as digits as its factorization.

125623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its digits is 360, while the sum is 19.

The square root of 125623 is about 354.4333505753. The cubic root of 125623 is about 50.0829290461.

It can be divided in two parts, 12 and 5623, that multiplied together give a palindrome (67476).

The spelling of 125623 in words is "one hundred twenty-five thousand, six hundred twenty-three".