4064255221 has 16 divisors (see below), whose sum is σ = 4431959280. Its totient is φ = 3704532480.

The previous prime is 4064255191. The next prime is 4064255231. The reversal of 4064255221 is 1225524604.

It can be written as a sum of positive squares in 8 ways, for example, as 302272996 + 3761982225 = 17386^2 + 61335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4064255221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4064255231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086871 + ... + 1090603.

It is an arithmetic number, because the mean of its divisors is an integer number (276997455).

Almost surely, 2^4064255221 is an apocalyptic number.

It is an amenable number.

4064255221 is a deficient number, since it is larger than the sum of its proper divisors (367704059).

4064255221 is a wasteful number, since it uses less digits than its factorization.

4064255221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 4064255221 is about 63751.5115193358. The cubic root of 4064255221 is about 1595.8558407165.

Adding to 4064255221 its reverse (1225524604), we get a palindrome (5289779825).

The spelling of 4064255221 in words is "four billion, sixty-four million, two hundred fifty-five thousand, two hundred twenty-one".