20433025 has 6 divisors (see below), whose sum is σ = 25336982. Its totient is φ = 16346400.

The previous prime is 20433013. The next prime is 20433043. The reversal of 20433025 is 52033402.

It can be written as a sum of positive squares in 3 ways, for example, as 11664 + 20421361 = 108^2 + 4519^2 .

It is not a de Polignac number, because 20433025 - 2⁷ = 20432897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20432993 and 20433011.

It is an unprimeable number.

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, 408636 + ... + 408685.

Almost surely, 2^20433025 is an apocalyptic number.

20433025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20433025 is a deficient number, since it is larger than the sum of its proper divisors (4903957).

20433025 is an equidigital number, since it uses as much as digits as its factorization.

20433025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817331 (or 817326 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20433025 is about 4520.2903667796. The cubic root of 20433025 is about 273.3868087256.

Adding to 20433025 its reverse (52033402), we get a palindrome (72466427).

The spelling of 20433025 in words is "twenty million, four hundred thirty-three thousand, twenty-five".