8251242722 has 6 divisors (see below), whose sum is σ = 12377056779. Its totient is φ = 4125557130.

The previous prime is 8251242721. The next prime is 8251242739. The reversal of 8251242722 is 2272421528.

It can be written as a sum of positive squares in only one way, i.e., 4125621361 + 4125621361 = 64231^2 + 64231^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=64231.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8251242721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 96347 + ... + 160577.

Almost surely, 2^8251242722 is an apocalyptic number.

8251242722 is a deficient number, since it is larger than the sum of its proper divisors (4125814057).

8251242722 is an frugal number, since it uses more digits than its factorization.

8251242722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128464 (or 64233 counting only the distinct ones).

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

The square root of 8251242722 is about 90836.3513247863. The cubic root of 8251242722 is about 2020.7214625482.

The spelling of 8251242722 in words is "eight billion, two hundred fifty-one million, two hundred forty-two thousand, seven hundred twenty-two".