20544350125 has 32 divisors (see below), whose sum is σ = 28064391264. Its totient is φ = 14922432000.

The previous prime is 20544350117. The next prime is 20544350161. The reversal of 20544350125 is 52105344502.

It can be written as a sum of positive squares in 16 ways, for example, as 19914289924 + 630060201 = 141118^2 + 25101^2 .

It is not a de Polignac number, because 20544350125 - 2³ = 20544350117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4504 + ... + 202753.

It is an arithmetic number, because the mean of its divisors is an integer number (877012227).

Almost surely, 2^20544350125 is an apocalyptic number.

20544350125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20544350125 is a deficient number, since it is larger than the sum of its proper divisors (7520041139).

20544350125 is a wasteful number, since it uses less digits than its factorization.

20544350125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207346 (or 207336 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 20544350125 its reverse (52105344502), we get a palindrome (72649694627).

The spelling of 20544350125 in words is "twenty billion, five hundred forty-four million, three hundred fifty thousand, one hundred twenty-five".