20620240325 has 6 divisors (see below), whose sum is σ = 25569098034. Its totient is φ = 16496192240.

The previous prime is 20620240307. The next prime is 20620240349. The reversal of 20620240325 is 52304202602.

It can be written as a sum of positive squares in 3 ways, for example, as 3411260836 + 17208979489 = 58406^2 + 131183^2 .

It is not a de Polignac number, because 20620240325 - 2²⁴ = 20603463109 is a prime.

It is a super-2 number, since 2×20620240325² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20620240294 and 20620240303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412404782 + ... + 412404831.

It is an arithmetic number, because the mean of its divisors is an integer number (4261516339).

Almost surely, 2^20620240325 is an apocalyptic number.

20620240325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20620240325 is a deficient number, since it is larger than the sum of its proper divisors (4948857709).

20620240325 is an equidigital number, since it uses as much as digits as its factorization.

20620240325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824809623 (or 824809618 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20620240325 its reverse (52304202602), we get a palindrome (72924442927).

The spelling of 20620240325 in words is "twenty billion, six hundred twenty million, two hundred forty thousand, three hundred twenty-five".