20310506620325 has 6 divisors (see below), whose sum is σ = 25185028209234. Its totient is φ = 16248405296240.

The previous prime is 20310506620301. The next prime is 20310506620363. The reversal of 20310506620325 is 52302660501302.

It can be written as a sum of positive squares in 3 ways, for example, as 2762400230209 + 17548106390116 = 1662047^2 + 4189046^2 .

It is not a de Polignac number, because 20310506620325 - 2³⁴ = 20293326751141 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 406210132382 + ... + 406210132431.

It is an arithmetic number, because the mean of its divisors is an integer number (4197504701539).

Almost surely, 2^{20310506620325} is an apocalyptic number.

20310506620325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20310506620325 is a deficient number, since it is larger than the sum of its proper divisors (4874521588909).

20310506620325 is an equidigital number, since it uses as much as digits as its factorization.

20310506620325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812420264823 (or 812420264818 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 20310506620325 in words is "twenty trillion, three hundred ten billion, five hundred six million, six hundred twenty thousand, three hundred twenty-five".