8442270251 has 2 divisors, whose sum is σ = 8442270252. Its totient is φ = 8442270250.

The previous prime is 8442270181. The next prime is 8442270283. The reversal of 8442270251 is 1520722448.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8442270251 is a prime.

It is not a weakly prime, because it can be changed into another prime (8442273251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221135125 + 4221135126.

It is an arithmetic number, because the mean of its divisors is an integer number (4221135126).

Almost surely, 2^8442270251 is an apocalyptic number.

8442270251 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442270251 is an equidigital number, since it uses as much as digits as its factorization.

8442270251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 8442270251 is about 91881.8276429023. The cubic root of 8442270251 is about 2036.1967980439.

Adding to 8442270251 its reverse (1520722448), we get a palindrome (9962992699).

The spelling of 8442270251 in words is "eight billion, four hundred forty-two million, two hundred seventy thousand, two hundred fifty-one".