4256385 has 24 divisors (see below), whose sum is σ = 7923456. Its totient is φ = 1945440.

The previous prime is 4256383. The next prime is 4256389. The reversal of 4256385 is 5836524.

It is not a de Polignac number, because 4256385 - 2¹ = 4256383 is a prime.

It is a Curzon number.

4256385 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2161 + ... + 3630.

It is an arithmetic number, because the mean of its divisors is an integer number (330144).

Almost surely, 2^4256385 is an apocalyptic number.

It is an amenable number.

4256385 is a deficient number, since it is larger than the sum of its proper divisors (3667071).

4256385 is a wasteful number, since it uses less digits than its factorization.

4256385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813 (or 5806 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 4256385 is about 2063.1008215790. The cubic root of 4256385 is about 162.0616668141.

The spelling of 4256385 in words is "four million, two hundred fifty-six thousand, three hundred eighty-five".