20320003125 has 36 divisors (see below), whose sum is σ = 36686597220. Its totient is φ = 10837320000.

The previous prime is 20320003043. The next prime is 20320003129. The reversal of 20320003125 is 52130002302.

It can be written as a sum of positive squares in 6 ways, for example, as 11587661316 + 8732341809 = 107646^2 + 93447^2 .

It is not a de Polignac number, because 20320003125 - 2⁹ = 20320002613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20320003098 and 20320003107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320003129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 333120 + ... + 389369.

It is an arithmetic number, because the mean of its divisors is an integer number (1019072145).

Almost surely, 2^20320003125 is an apocalyptic number.

20320003125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20320003125 is a deficient number, since it is larger than the sum of its proper divisors (16366594095).

20320003125 is an frugal number, since it uses more digits than its factorization.

20320003125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722520 (or 722497 counting only the distinct ones).

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

Adding to 20320003125 its reverse (52130002302), we get a palindrome (72450005427).

The spelling of 20320003125 in words is "twenty billion, three hundred twenty million, three thousand, one hundred twenty-five".