4255815385 has 8 divisors (see below), whose sum is σ = 5128170696. Its totient is φ = 3390524160.

The previous prime is 4255815371. The next prime is 4255815391. The reversal of 4255815385 is 5835185524.

It can be written as a sum of positive squares in 4 ways, for example, as 2310917184 + 1944898201 = 48072^2 + 44101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4255815385 - 2²⁹ = 3718944473 is a prime.

It is a super-2 number, since 2×4255815385² = 36223929182405396450, 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 7 ways as a sum of consecutive naturals, for example, 1764694 + ... + 1767103.

It is an arithmetic number, because the mean of its divisors is an integer number (641021337).

Almost surely, 2^4255815385 is an apocalyptic number.

It is an amenable number.

4255815385 is a deficient number, since it is larger than the sum of its proper divisors (872355311).

4255815385 is a wasteful number, since it uses less digits than its factorization.

4255815385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532043.

The product of its digits is 960000, while the sum is 46.

The square root of 4255815385 is about 65236.6107718664. The cubic root of 4255815385 is about 1620.5443713643.

The spelling of 4255815385 in words is "four billion, two hundred fifty-five million, eight hundred fifteen thousand, three hundred eighty-five".