20008025 has 12 divisors (see below), whose sum is σ = 24881964. Its totient is φ = 15960000.

The previous prime is 20008019. The next prime is 20008039. The reversal of 20008025 is 52080002.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9223369 + 10784656 = 3037^2 + 3284^2 .

It is not a de Polignac number, because 20008025 - 2²⁴ = 3230809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20007994 and 20008012.

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, 9575 + ... + 11475.

It is an arithmetic number, because the mean of its divisors is an integer number (2073497).

Almost surely, 2^20008025 is an apocalyptic number.

20008025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20008025 is a deficient number, since it is larger than the sum of its proper divisors (4873939).

20008025 is a wasteful number, since it uses less digits than its factorization.

20008025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20008025 is about 4473.0330872910. The cubic root of 20008025 is about 271.4780621404.

Adding to 20008025 its reverse (52080002), we get a palindrome (72088027).

The spelling of 20008025 in words is "twenty million, eight thousand, twenty-five".