4256582681 has 8 divisors (see below), whose sum is σ = 4614779400. Its totient is φ = 3902781312.

The previous prime is 4256582657. The next prime is 4256582713. The reversal of 4256582681 is 1862856524.

It can be written as a sum of positive squares in 4 ways, for example, as 303317056 + 3953265625 = 17416^2 + 62875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4256582681 - 2¹⁴ = 4256566297 is a prime.

It is a super-2 number, since 2×4256582681² = 36236992240378295522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4256582651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096820 + ... + 1100693.

It is an arithmetic number, because the mean of its divisors is an integer number (576847425).

Almost surely, 2^4256582681 is an apocalyptic number.

It is an amenable number.

4256582681 is a deficient number, since it is larger than the sum of its proper divisors (358196719).

4256582681 is a wasteful number, since it uses less digits than its factorization.

4256582681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197675.

The product of its digits is 921600, while the sum is 47.

The square root of 4256582681 is about 65242.4913764028. The cubic root of 4256582681 is about 1620.6417567363.

The spelling of 4256582681 in words is "four billion, two hundred fifty-six million, five hundred eighty-two thousand, six hundred eighty-one".