20271325 has 6 divisors (see below), whose sum is σ = 25136474. Its totient is φ = 16217040.

The previous prime is 20271323. The next prime is 20271331. The reversal of 20271325 is 52317202.

It can be written as a sum of positive squares in 3 ways, for example, as 1279161 + 18992164 = 1131^2 + 4358^2 .

It is not a de Polignac number, because 20271325 - 2¹ = 20271323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20271296 and 20271305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20271323) by changing a digit.

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, 405402 + ... + 405451.

Almost surely, 2^20271325 is an apocalyptic number.

20271325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20271325 is a deficient number, since it is larger than the sum of its proper divisors (4865149).

20271325 is an equidigital number, since it uses as much as digits as its factorization.

20271325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810863 (or 810858 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20271325 is about 4502.3688209652. The cubic root of 20271325 is about 272.6637346093.

Adding to 20271325 its reverse (52317202), we get a palindrome (72588527).

The spelling of 20271325 in words is "twenty million, two hundred seventy-one thousand, three hundred twenty-five".