4243255065 has 96 divisors (see below), whose sum is σ = 8823499776. Its totient is φ = 1916084160.

The previous prime is 4243255061. The next prime is 4243255067. The reversal of 4243255065 is 5605523424.

4243255065 is a `hidden beast` number, since 4 + 2 + 43 + 2 + 550 + 65 = 666.

It is not a de Polignac number, because 4243255065 - 2² = 4243255061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4243255061) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 702910 + ... + 708920.

It is an arithmetic number, because the mean of its divisors is an integer number (91911456).

Almost surely, 2^4243255065 is an apocalyptic number.

4243255065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4243255065 is an abundant number, since it is smaller than the sum of its proper divisors (4580244711).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4243255065 is an equidigital number, since it uses as much as digits as its factorization.

4243255065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121 (or 6109 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The square root of 4243255065 is about 65140.2722208006. The cubic root of 4243255065 is about 1618.9485461012.

Adding to 4243255065 its reverse (5605523424), we get a palindrome (9848778489).

The spelling of 4243255065 in words is "four billion, two hundred forty-three million, two hundred fifty-five thousand, sixty-five".