256325783 has 8 divisors (see below), whose sum is σ = 293523360. Its totient is φ = 219273120.

The previous prime is 256325761. The next prime is 256325807. The reversal of 256325783 is 387523652.

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 256325783 - 2²² = 252131479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256325783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256325723) 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, 32408 + ... + 39533.

It is an arithmetic number, because the mean of its divisors is an integer number (36690420).

Almost surely, 2^256325783 is an apocalyptic number.

256325783 is a deficient number, since it is larger than the sum of its proper divisors (37197577).

256325783 is an equidigital number, since it uses as much as digits as its factorization.

256325783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72457.

The product of its digits is 302400, while the sum is 41.

The square root of 256325783 is about 16010.1774818395. The cubic root of 256325783 is about 635.2296546723.

The spelling of 256325783 in words is "two hundred fifty-six million, three hundred twenty-five thousand, seven hundred eighty-three".