4256221705 has 4 divisors (see below), whose sum is σ = 5107466052. Its totient is φ = 3404977360.

The previous prime is 4256221687. The next prime is 4256221721. The reversal of 4256221705 is 5071226524.

4256221705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1951165584 + 2305056121 = 44172^2 + 48011^2 .

It is not a de Polignac number, because 4256221705 - 2⁷ = 4256221577 is a prime.

It is a super-2 number, since 2×4256221705² = 36230846404226214050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425622166 + ... + 425622175.

It is an arithmetic number, because the mean of its divisors is an integer number (1276866513).

Almost surely, 2^4256221705 is an apocalyptic number.

It is an amenable number.

4256221705 is a deficient number, since it is larger than the sum of its proper divisors (851244347).

4256221705 is an equidigital number, since it uses as much as digits as its factorization.

4256221705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851244346.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 4256221705 is about 65239.7248997879. The cubic root of 4256221705 is about 1620.5959430433.

The spelling of 4256221705 in words is "four billion, two hundred fifty-six million, two hundred twenty-one thousand, seven hundred five".