20043025 has 12 divisors (see below), whose sum is σ = 24914700. Its totient is φ = 15994880.

The previous prime is 20043007. The next prime is 20043053. The reversal of 20043025 is 52034002.

It can be written as a sum of positive squares in 6 ways, for example, as 7568001 + 12475024 = 2751^2 + 3532^2 .

It is not a de Polignac number, because 20043025 - 2⁵ = 20042993 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 13521 + ... + 14929.

It is an arithmetic number, because the mean of its divisors is an integer number (2076225).

Almost surely, 2^20043025 is an apocalyptic number.

20043025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20043025 is a deficient number, since it is larger than the sum of its proper divisors (4871675).

20043025 is a wasteful number, since it uses less digits than its factorization.

20043025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20043025 is about 4476.9437119535. The cubic root of 20043025 is about 271.6362686117.

Adding to 20043025 its reverse (52034002), we get a palindrome (72077027).

The spelling of 20043025 in words is "twenty million, forty-three thousand, twenty-five".