20225015543 has 2 divisors, whose sum is σ = 20225015544. Its totient is φ = 20225015542.

The previous prime is 20225015533. The next prime is 20225015593. The reversal of 20225015543 is 34551052202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20225015543 - 2⁸ = 20225015287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225015533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112507771 + 10112507772.

It is an arithmetic number, because the mean of its divisors is an integer number (10112507772).

Almost surely, 2^20225015543 is an apocalyptic number.

20225015543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225015543 is an equidigital number, since it uses as much as digits as its factorization.

20225015543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 20225015543 its reverse (34551052202), we get a palindrome (54776067745).

The spelling of 20225015543 in words is "twenty billion, two hundred twenty-five million, fifteen thousand, five hundred forty-three".