4255768391 has 4 divisors (see below), whose sum is σ = 4863735312. Its totient is φ = 3647801472.

The previous prime is 4255768369. The next prime is 4255768393. The reversal of 4255768391 is 1938675524.

It is a happy number.

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

It is not a de Polignac number, because 4255768391 - 2⁶ = 4255768327 is a prime.

It is a super-2 number, since 2×4255768391² = 36223129195669457762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4255768393) 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, 303983450 + ... + 303983463.

It is an arithmetic number, because the mean of its divisors is an integer number (1215933828).

Almost surely, 2^4255768391 is an apocalyptic number.

4255768391 is a deficient number, since it is larger than the sum of its proper divisors (607966921).

4255768391 is an equidigital number, since it uses as much as digits as its factorization.

4255768391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607966920.

The product of its digits is 1814400, while the sum is 50.

The square root of 4255768391 is about 65236.2505896836. The cubic root of 4255768391 is about 1620.5384064954.

The spelling of 4255768391 in words is "four billion, two hundred fifty-five million, seven hundred sixty-eight thousand, three hundred ninety-one".