4255645 has 8 divisors (see below), whose sum is σ = 5121720. Its totient is φ = 3394560.

The previous prime is 4255637. The next prime is 4255673. The reversal of 4255645 is 5465524.

It can be written as a sum of positive squares in 4 ways, for example, as 994009 + 3261636 = 997^2 + 1806^2 .

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

It is not a de Polignac number, because 4255645 - 2³ = 4255637 is a prime.

It is a super-2 number, since 2×4255645² = 36221028732050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005 + ... + 3085.

It is an arithmetic number, because the mean of its divisors is an integer number (640215).

Almost surely, 2^4255645 is an apocalyptic number.

It is an amenable number.

4255645 is a deficient number, since it is larger than the sum of its proper divisors (866075).

4255645 is a wasteful number, since it uses less digits than its factorization.

4255645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its digits is 24000, while the sum is 31.

The square root of 4255645 is about 2062.9214720876. The cubic root of 4255645 is about 162.0522744476.

It can be divided in two parts, 4255 and 645, that added together give a square (4900 = 70²).

The spelling of 4255645 in words is "four million, two hundred fifty-five thousand, six hundred forty-five".