4255643231 has 4 divisors (see below), whose sum is σ = 4863592272. Its totient is φ = 3647694192.

The previous prime is 4255643219. The next prime is 4255643243. The reversal of 4255643231 is 1323465524.

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

It is an interprime number because it is at equal distance from previous prime (4255643219) and next prime (4255643243).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4255643231 is a prime.

It is a super-2 number, since 2×4255643231² = 36220998619112238722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4255643191 and 4255643200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4255643261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303974510 + ... + 303974523.

It is an arithmetic number, because the mean of its divisors is an integer number (1215898068).

Almost surely, 2^4255643231 is an apocalyptic number.

4255643231 is a deficient number, since it is larger than the sum of its proper divisors (607949041).

4255643231 is an equidigital number, since it uses as much as digits as its factorization.

4255643231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607949040.

The product of its digits is 86400, while the sum is 35.

The square root of 4255643231 is about 65235.2913000318. The cubic root of 4255643231 is about 1620.5225199342.

The spelling of 4255643231 in words is "four billion, two hundred fifty-five million, six hundred forty-three thousand, two hundred thirty-one".