4256641507 has 2 divisors, whose sum is σ = 4256641508. Its totient is φ = 4256641506.

The previous prime is 4256641463. The next prime is 4256641517. The reversal of 4256641507 is 7051466524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4256641507 - 2⁷ = 4256641379 is a prime.

It is a super-3 number, since 3×4256641507³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4256641507.

It is not a weakly prime, because it can be changed into another prime (4256641517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128320753 + 2128320754.

It is an arithmetic number, because the mean of its divisors is an integer number (2128320754).

Almost surely, 2^4256641507 is an apocalyptic number.

4256641507 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256641507 is an equidigital number, since it uses as much as digits as its factorization.

4256641507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 4256641507 is about 65242.9422006703. The cubic root of 4256641507 is about 1620.6492224618.

The spelling of 4256641507 in words is "four billion, two hundred fifty-six million, six hundred forty-one thousand, five hundred seven".