20255320325 has 12 divisors (see below), whose sum is σ = 25118364420. Its totient is φ = 16203116160.

The previous prime is 20255320289. The next prime is 20255320339. The reversal of 20255320325 is 52302355202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2854016929 + 17401303396 = 53423^2 + 131914^2 .

It is not a de Polignac number, because 20255320325 - 2¹⁸ = 20255058181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660431 + ... + 690419.

It is an arithmetic number, because the mean of its divisors is an integer number (2093197035).

Almost surely, 2^20255320325 is an apocalyptic number.

20255320325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20255320325 is a deficient number, since it is larger than the sum of its proper divisors (4863044095).

20255320325 is a wasteful number, since it uses less digits than its factorization.

20255320325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57016 (or 57011 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

Adding to 20255320325 its reverse (52302355202), we get a palindrome (72557675527).

The spelling of 20255320325 in words is "twenty billion, two hundred fifty-five million, three hundred twenty thousand, three hundred twenty-five".