123725 has 18 divisors (see below), whose sum is σ = 180234. Its totient is φ = 84000.

The previous prime is 123719. The next prime is 123727. The reversal of 123725 is 527321.

It can be written as a sum of positive squares in 3 ways, for example, as 33124 + 90601 = 182^2 + 301^2 .

It is not a de Polignac number, because 123725 - 2⁶ = 123661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123697 and 123706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1175 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (10013).

2¹²³⁷²⁵ is an apocalyptic number.

It is an amenable number.

123725 is a deficient number, since it is larger than the sum of its proper divisors (56509).

123725 is a wasteful number, since it uses less digits than its factorization.

123725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 113 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 123725 is about 351.7456467392. The cubic root of 123725 is about 49.8294187022.

It can be divided in two parts, 123 and 725, that added together give a palindrome (848).

The spelling of 123725 in words is "one hundred twenty-three thousand, seven hundred twenty-five".