123125 has 10 divisors (see below), whose sum is σ = 154638. Its totient is φ = 98000.

The previous prime is 123121. The next prime is 123127. The reversal of 123125 is 521321.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 14884 + 108241 = 122^2 + 329^2 .

It is not a de Polignac number, because 123125 - 2² = 123121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 527 + ... + 723.

2¹²³¹²⁵ is an apocalyptic number.

It is an amenable number.

123125 is a deficient number, since it is larger than the sum of its proper divisors (31513).

123125 is an frugal number, since it uses more digits than its factorization.

123125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 202 counting only the distinct ones).

The product of its digits is 60, while the sum is 14.

The square root of 123125 is about 350.8917211905. The cubic root of 123125 is about 49.7487394780.

Adding to 123125 its reverse (521321), we get a palindrome (644446).

The spelling of 123125 in words is "one hundred twenty-three thousand, one hundred twenty-five".