518125 has 10 divisors (see below), whose sum is σ = 648230. Its totient is φ = 414000.

The previous prime is 518123. The next prime is 518129. The reversal of 518125 is 521815.

518125 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 5 ways, for example, as 184041 + 334084 = 429^2 + 578^2 .

It is not a de Polignac number, because 518125 - 2¹ = 518123 is a prime.

It is a super-3 number, since 3×518125³ = 417277433349609375, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518096 and 518105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518123) 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, 211 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (64823).

2⁵¹⁸¹²⁵ is an apocalyptic number.

It is an amenable number.

518125 is a deficient number, since it is larger than the sum of its proper divisors (130105).

518125 is an frugal number, since it uses more digits than its factorization.

518125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 834 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 518125 is about 719.8090024444. The cubic root of 518125 is about 80.3177467087.

The spelling of 518125 in words is "five hundred eighteen thousand, one hundred twenty-five".