318825 has 36 divisors (see below), whose sum is σ = 620620. Its totient is φ = 155520.

The previous prime is 318823. The next prime is 318833. The reversal of 318825 is 528813.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 17424 + 301401 = 132^2 + 549^2 .

It is not a de Polignac number, because 318825 - 2¹ = 318823 is a prime.

It is a super-3 number, since 3×318825³ = 97225091333296875, which contains 333 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318825.

It is not an unprimeable number, because it can be changed into a prime (318823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2871 + ... + 2979.

2³¹⁸⁸²⁵ is an apocalyptic number.

It is an amenable number.

318825 is a deficient number, since it is larger than the sum of its proper divisors (301795).

318825 is a wasteful number, since it uses less digits than its factorization.

318825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 130 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 318825 is about 564.6459067416. The cubic root of 318825 is about 68.3152176183.

The spelling of 318825 in words is "three hundred eighteen thousand, eight hundred twenty-five".