6265278221 has 4 divisors (see below), whose sum is σ = 6274533372. Its totient is φ = 6256023072.

The previous prime is 6265278199. The next prime is 6265278247. The reversal of 6265278221 is 1228725626.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6066073225 + 199204996 = 77885^2 + 14114^2 .

It is a cyclic number.

It is not a de Polignac number, because 6265278221 - 2³⁰ = 5191536397 is a prime.

It is a super-2 number, since 2×6265278221² = 78507422373073849682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6265278251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4626560 + ... + 4627913.

It is an arithmetic number, because the mean of its divisors is an integer number (1568633343).

Almost surely, 2^6265278221 is an apocalyptic number.

It is an amenable number.

6265278221 is a deficient number, since it is larger than the sum of its proper divisors (9255151).

6265278221 is an equidigital number, since it uses as much as digits as its factorization.

6265278221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9255150.

The product of its digits is 161280, while the sum is 41.

The square root of 6265278221 is about 79153.5104780578. The cubic root of 6265278221 is about 1843.5154732147.

The spelling of 6265278221 in words is "six billion, two hundred sixty-five million, two hundred seventy-eight thousand, two hundred twenty-one".