543825 has 18 divisors (see below), whose sum is σ = 974454. Its totient is φ = 289920.

The previous prime is 543811. The next prime is 543827. The reversal of 543825 is 528345.

It can be written as a sum of positive squares in 3 ways, for example, as 154449 + 389376 = 393^2 + 624^2 .

It is not a de Polignac number, because 543825 - 2⁵ = 543793 is a prime.

It is a d-powerful number, because it can be written as 5² + 4⁷ + 8⁶ + 3 + 2¹⁸ + 5⁵ .

543825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (543827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 984 + ... + 1433.

2⁵⁴³⁸²⁵ is an apocalyptic number.

It is an amenable number.

543825 is a deficient number, since it is larger than the sum of its proper divisors (430629).

543825 is a wasteful number, since it uses less digits than its factorization.

543825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2425 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 543825 is about 737.4449131969. Note that the first 3 decimals coincide. The cubic root of 543825 is about 81.6243475500.

The spelling of 543825 in words is "five hundred forty-three thousand, eight hundred twenty-five".