256341265 has 8 divisors (see below), whose sum is σ = 307949760. Its totient is φ = 204846192.

The previous prime is 256341259. The next prime is 256341269. The reversal of 256341265 is 562143652.

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

It is a cyclic number.

It is not a de Polignac number, because 256341265 - 2³ = 256341257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256341265.

It is not an unprimeable number, because it can be changed into a prime (256341269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23299 + ... + 32488.

It is an arithmetic number, because the mean of its divisors is an integer number (38493720).

Almost surely, 2^256341265 is an apocalyptic number.

It is an amenable number.

256341265 is a deficient number, since it is larger than the sum of its proper divisors (51608495).

256341265 is an equidigital number, since it uses as much as digits as its factorization.

256341265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56711.

The product of its digits is 43200, while the sum is 34.

The square root of 256341265 is about 16010.6609794849. The cubic root of 256341265 is about 635.2424436414.

The spelling of 256341265 in words is "two hundred fifty-six million, three hundred forty-one thousand, two hundred sixty-five".