20525220451441 has 2 divisors, whose sum is σ = 20525220451442. Its totient is φ = 20525220451440.

The previous prime is 20525220451403. The next prime is 20525220451469. The reversal of 20525220451441 is 14415402252502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18046107221041 + 2479113230400 = 4248071^2 + 1574520^2 .

It is a cyclic number.

It is not a de Polignac number, because 20525220451441 - 2⁷ = 20525220451313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20525220451441.

It is not a weakly prime, because it can be changed into another prime (20525220452441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262610225720 + 10262610225721.

It is an arithmetic number, because the mean of its divisors is an integer number (10262610225721).

Almost surely, 2^{20525220451441} is an apocalyptic number.

It is an amenable number.

20525220451441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525220451441 is an equidigital number, since it uses as much as digits as its factorization.

20525220451441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 20525220451441 in words is "twenty trillion, five hundred twenty-five billion, two hundred twenty million, four hundred fifty-one thousand, four hundred forty-one".