20055250224521 has 2 divisors, whose sum is σ = 20055250224522. Its totient is φ = 20055250224520.

The previous prime is 20055250224517. The next prime is 20055250224619. The reversal of 20055250224521 is 12542205255002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19395964687225 + 659285537296 = 4404085^2 + 811964^2 .

It is a cyclic number.

It is not a de Polignac number, because 20055250224521 - 2² = 20055250224517 is a prime.

It is not a weakly prime, because it can be changed into another prime (20055250224421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027625112260 + 10027625112261.

It is an arithmetic number, because the mean of its divisors is an integer number (10027625112261).

Almost surely, 2^{20055250224521} is an apocalyptic number.

It is an amenable number.

20055250224521 is a deficient number, since it is larger than the sum of its proper divisors (1).

20055250224521 is an equidigital number, since it uses as much as digits as its factorization.

20055250224521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 20055250224521 its reverse (12542205255002), we get a palindrome (32597455479523).

The spelling of 20055250224521 in words is "twenty trillion, fifty-five billion, two hundred fifty million, two hundred twenty-four thousand, five hundred twenty-one".