250012441220561 has 2 divisors, whose sum is σ = 250012441220562. Its totient is φ = 250012441220560.

The previous prime is 250012441220527. The next prime is 250012441220587. The reversal of 250012441220561 is 165022144210052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189643332921025 + 60369108299536 = 13771105^2 + 7769756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250012441220561 is a prime.

It is not a weakly prime, because it can be changed into another prime (250012441229561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125006220610280 + 125006220610281.

It is an arithmetic number, because the mean of its divisors is an integer number (125006220610281).

Almost surely, 2^{250012441220561} is an apocalyptic number.

It is an amenable number.

250012441220561 is a deficient number, since it is larger than the sum of its proper divisors (1).

250012441220561 is an equidigital number, since it uses as much as digits as its factorization.

250012441220561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 250012441220561 in words is "two hundred fifty trillion, twelve billion, four hundred forty-one million, two hundred twenty thousand, five hundred sixty-one".