20543351125 has 32 divisors (see below), whose sum is σ = 28257360768. Its totient is φ = 14786496000.

The previous prime is 20543351107. The next prime is 20543351131. The reversal of 20543351125 is 52115334502.

It is not a de Polignac number, because 20543351125 - 2¹¹ = 20543349077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56362 + ... + 210388.

It is an arithmetic number, because the mean of its divisors is an integer number (883042524).

Almost surely, 2^20543351125 is an apocalyptic number.

20543351125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20543351125 is a deficient number, since it is larger than the sum of its proper divisors (7714009643).

20543351125 is a wasteful number, since it uses less digits than its factorization.

20543351125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154150 (or 154140 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 20543351125 its reverse (52115334502), we get a palindrome (72658685627).

The spelling of 20543351125 in words is "twenty billion, five hundred forty-three million, three hundred fifty-one thousand, one hundred twenty-five".