2189825 has 12 divisors (see below), whose sum is σ = 2962608. Its totient is φ = 1592400.

The previous prime is 2189813. The next prime is 2189843. The reversal of 2189825 is 5289812.

It is not a de Polignac number, because 2189825 - 2¹⁶ = 2124289 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3707 + ... + 4256.

It is an arithmetic number, because the mean of its divisors is an integer number (246884).

2^2189825 is an apocalyptic number.

2189825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2189825 is a deficient number, since it is larger than the sum of its proper divisors (772783).

2189825 is a wasteful number, since it uses less digits than its factorization.

2189825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984 (or 7979 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 2189825 is about 1479.8057304930. The cubic root of 2189825 is about 129.8583269241.

The spelling of 2189825 in words is "two million, one hundred eighty-nine thousand, eight hundred twenty-five".