20310253325 has 12 divisors (see below), whose sum is σ = 25353743700. Its totient is φ = 16139151360.

The previous prime is 20310253321. The next prime is 20310253349. The reversal of 20310253325 is 52335201302.

It can be written as a sum of positive squares in 6 ways, for example, as 1262665156 + 19047588169 = 35534^2 + 138013^2 .

It is not a de Polignac number, because 20310253325 - 2² = 20310253321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20310253294 and 20310253303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310253321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2722484 + ... + 2729933.

It is an arithmetic number, because the mean of its divisors is an integer number (2112811975).

Almost surely, 2^20310253325 is an apocalyptic number.

20310253325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20310253325 is a deficient number, since it is larger than the sum of its proper divisors (5043490375).

20310253325 is a wasteful number, since it uses less digits than its factorization.

20310253325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452576 (or 5452571 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 20310253325 its reverse (52335201302), we get a palindrome (72645454627).

The spelling of 20310253325 in words is "twenty billion, three hundred ten million, two hundred fifty-three thousand, three hundred twenty-five".