20238025 has 6 divisors (see below), whose sum is σ = 25095182. Its totient is φ = 16190400.

The previous prime is 20238019. The next prime is 20238037. The reversal of 20238025 is 52083202.

It can be written as a sum of positive squares in 3 ways, for example, as 131769 + 20106256 = 363^2 + 4484^2 .

It is not a de Polignac number, because 20238025 - 2³ = 20238017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20237987 and 20238005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404736 + ... + 404785.

Almost surely, 2^20238025 is an apocalyptic number.

20238025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20238025 is a deficient number, since it is larger than the sum of its proper divisors (4857157).

20238025 is an equidigital number, since it uses as much as digits as its factorization.

20238025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809531 (or 809526 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20238025 is about 4498.6692476776. The cubic root of 20238025 is about 272.5143498882.

The spelling of 20238025 in words is "twenty million, two hundred thirty-eight thousand, twenty-five".