20323125 has 30 divisors (see below), whose sum is σ = 36692942. Its totient is φ = 10836000.

The previous prime is 20323091. The next prime is 20323139. The reversal of 20323125 is 52132302.

It can be written as a sum of positive squares in 5 ways, for example, as 15421329 + 4901796 = 3927^2 + 2214^2 .

It is not a de Polignac number, because 20323125 - 2¹⁸ = 20060981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323098 and 20323107.

It is a congruent number.

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 29 ways as a sum of consecutive naturals, for example, 3819 + ... + 7431.

Almost surely, 2^20323125 is an apocalyptic number.

20323125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20323125 is a deficient number, since it is larger than the sum of its proper divisors (16369817).

20323125 is an equidigital number, since it uses as much as digits as its factorization.

20323125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20323125 is about 4508.1176781446. The cubic root of 20323125 is about 272.8957860087.

Adding to 20323125 its reverse (52132302), we get a palindrome (72455427).

The spelling of 20323125 in words is "twenty million, three hundred twenty-three thousand, one hundred twenty-five".