20525344143 has 4 divisors (see below), whose sum is σ = 27367125528. Its totient is φ = 13683562760.

The previous prime is 20525344051. The next prime is 20525344153. The reversal of 20525344143 is 34144352502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20525344143 - 2¹⁶ = 20525278607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525344153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3420890688 + ... + 3420890693.

It is an arithmetic number, because the mean of its divisors is an integer number (6841781382).

Almost surely, 2^20525344143 is an apocalyptic number.

20525344143 is a deficient number, since it is larger than the sum of its proper divisors (6841781385).

20525344143 is an equidigital number, since it uses as much as digits as its factorization.

20525344143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841781384.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20525344143 its reverse (34144352502), we get a palindrome (54669696645).

The spelling of 20525344143 in words is "twenty billion, five hundred twenty-five million, three hundred forty-four thousand, one hundred forty-three".