20125204543 has 2 divisors, whose sum is σ = 20125204544. Its totient is φ = 20125204542.

The previous prime is 20125204507. The next prime is 20125204553. The reversal of 20125204543 is 34540252102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20125204543 - 2¹⁷ = 20125073471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125204553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062602271 + 10062602272.

It is an arithmetic number, because the mean of its divisors is an integer number (10062602272).

Almost surely, 2^20125204543 is an apocalyptic number.

20125204543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125204543 is an equidigital number, since it uses as much as digits as its factorization.

20125204543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20125204543 its reverse (34540252102), we get a palindrome (54665456645).

The spelling of 20125204543 in words is "twenty billion, one hundred twenty-five million, two hundred four thousand, five hundred forty-three".