20500423325 has 24 divisors (see below), whose sum is σ = 26053332480. Its totient is φ = 15992470400.

The previous prime is 20500423303. The next prime is 20500423393. The reversal of 20500423325 is 52332400502.

It is not a de Polignac number, because 20500423325 - 2¹⁶ = 20500357789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20500423294 and 20500423303.

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 23 ways as a sum of consecutive naturals, for example, 2947502 + ... + 2954448.

It is an arithmetic number, because the mean of its divisors is an integer number (1085555520).

Almost surely, 2^20500423325 is an apocalyptic number.

20500423325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20500423325 is a deficient number, since it is larger than the sum of its proper divisors (5552909155).

20500423325 is a wasteful number, since it uses less digits than its factorization.

20500423325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9877 (or 9872 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 20500423325 its reverse (52332400502), we get a palindrome (72832823827).

The spelling of 20500423325 in words is "twenty billion, five hundred million, four hundred twenty-three thousand, three hundred twenty-five".