5643825 has 24 divisors (see below), whose sum is σ = 10180896. Its totient is φ = 2736000.

The previous prime is 5643821. The next prime is 5643851. The reversal of 5643825 is 5283465.

It is not a de Polignac number, because 5643825 - 2² = 5643821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (5643821) 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 23 ways as a sum of consecutive naturals, for example, 2596 + ... + 4245.

It is an arithmetic number, because the mean of its divisors is an integer number (424204).

Almost surely, 2^5643825 is an apocalyptic number.

5643825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5643825 is a deficient number, since it is larger than the sum of its proper divisors (4537071).

5643825 is a wasteful number, since it uses less digits than its factorization.

5643825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6865 (or 6860 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 5643825 is about 2375.6735886902. The cubic root of 5643825 is about 178.0428399181.

The spelling of 5643825 in words is "five million, six hundred forty-three thousand, eight hundred twenty-five".