10256565 has 24 divisors (see below), whose sum is σ = 18041184. Its totient is φ = 4972000.

The previous prime is 10256557. The next prime is 10256569. The reversal of 10256565 is 56565201.

It is not a de Polignac number, because 10256565 - 2³ = 10256557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10256569) 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, 1011 + ... + 4640.

It is an arithmetic number, because the mean of its divisors is an integer number (751716).

Almost surely, 2^10256565 is an apocalyptic number.

10256565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10256565 is a deficient number, since it is larger than the sum of its proper divisors (7784619).

10256565 is a wasteful number, since it uses less digits than its factorization.

10256565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681 (or 5670 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 10256565 is about 3202.5872353458. The cubic root of 10256565 is about 217.2704408476.

The spelling of 10256565 in words is "ten million, two hundred fifty-six thousand, five hundred sixty-five".