20303125 has 24 divisors (see below), whose sum is σ = 26013960. Its totient is φ = 15840000.

The previous prime is 20303123. The next prime is 20303137. The reversal of 20303125 is 52130302.

It can be written as a sum of positive squares in 12 ways, for example, as 20124196 + 178929 = 4486^2 + 423^2 .

It is not a de Polignac number, because 20303125 - 2¹ = 20303123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20303099 and 20303108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303123) 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 23 ways as a sum of consecutive naturals, for example, 228081 + ... + 228169.

It is an arithmetic number, because the mean of its divisors is an integer number (1083915).

Almost surely, 2^20303125 is an apocalyptic number.

20303125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20303125 is a deficient number, since it is larger than the sum of its proper divisors (5710835).

20303125 is an frugal number, since it uses more digits than its factorization.

20303125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20303125 is about 4505.8989114271. The cubic root of 20303125 is about 272.8062376563.

Adding to 20303125 its reverse (52130302), we get a palindrome (72433427).

The spelling of 20303125 in words is "twenty million, three hundred three thousand, one hundred twenty-five".