818725 has 6 divisors (see below), whose sum is σ = 1015250. Its totient is φ = 654960.

The previous prime is 818723. The next prime is 818813. The reversal of 818725 is 527818.

It can be written as a sum of positive squares in 3 ways, for example, as 12321 + 806404 = 111^2 + 898^2 .

It is not a de Polignac number, because 818725 - 2¹ = 818723 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818723) 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 5 ways as a sum of consecutive naturals, for example, 16350 + ... + 16399.

2⁸¹⁸⁷²⁵ is an apocalyptic number.

It is an amenable number.

818725 is a deficient number, since it is larger than the sum of its proper divisors (196525).

818725 is a wasteful number, since it uses less digits than its factorization.

818725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32759 (or 32754 counting only the distinct ones).

The product of its digits is 4480, while the sum is 31.

The square root of 818725 is about 904.8342389631. The cubic root of 818725 is about 93.5504793812.

The spelling of 818725 in words is "eight hundred eighteen thousand, seven hundred twenty-five".