4256226521 has 8 divisors (see below), whose sum is σ = 4441936320. Its totient is φ = 4070571472.

The previous prime is 4256226509. The next prime is 4256226551. The reversal of 4256226521 is 1256226524.

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 4256226521 - 2²² = 4252032217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4256226551) 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, 274646 + ... + 289728.

It is an arithmetic number, because the mean of its divisors is an integer number (555242040).

Almost surely, 2^4256226521 is an apocalyptic number.

It is an amenable number.

4256226521 is a deficient number, since it is larger than the sum of its proper divisors (185709799).

4256226521 is a wasteful number, since it uses less digits than its factorization.

4256226521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27375.

The product of its digits is 57600, while the sum is 35.

The square root of 4256226521 is about 65239.7618098043. The cubic root of 4256226521 is about 1620.5965542886.

The spelling of 4256226521 in words is "four billion, two hundred fifty-six million, two hundred twenty-six thousand, five hundred twenty-one".