256255347 has 8 divisors (see below), whose sum is σ = 341928144. Its totient is φ = 170709728.

The previous prime is 256255343. The next prime is 256255357. The reversal of 256255347 is 743552652.

It is a happy number.

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 256255347 - 2² = 256255343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256255343) 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, 26988 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (42741018).

Almost surely, 2^256255347 is an apocalyptic number.

256255347 is a deficient number, since it is larger than the sum of its proper divisors (85672797).

256255347 is a wasteful number, since it uses less digits than its factorization.

256255347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63589.

The product of its digits is 252000, while the sum is 39.

The square root of 256255347 is about 16007.9776049319. The cubic root of 256255347 is about 635.1714642263.

The spelling of 256255347 in words is "two hundred fifty-six million, two hundred fifty-five thousand, three hundred forty-seven".