4255649 has 4 divisors (see below), whose sum is σ = 4392960. Its totient is φ = 4118340.

The previous prime is 4255637. The next prime is 4255673. The reversal of 4255649 is 9465524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4255649 - 2¹² = 4251553 is a prime.

It is a super-2 number, since 2×4255649² = 36221096822402, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4² + 2²² + 5⁴ + 5⁴ + 6 + 4⁵ + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4255609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68609 + ... + 68670.

It is an arithmetic number, because the mean of its divisors is an integer number (1098240).

Almost surely, 2^4255649 is an apocalyptic number.

It is an amenable number.

4255649 is a deficient number, since it is larger than the sum of its proper divisors (137311).

4255649 is a wasteful number, since it uses less digits than its factorization.

4255649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137310.

The product of its digits is 43200, while the sum is 35.

The square root of 4255649 is about 2062.9224415862. The cubic root of 4255649 is about 162.0523252200.

The spelling of 4255649 in words is "four million, two hundred fifty-five thousand, six hundred forty-nine".