256245277 has 8 divisors (see below), whose sum is σ = 267947136. Its totient is φ = 244590192.

The previous prime is 256245263. The next prime is 256245289. The reversal of 256245277 is 772542652.

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 256245277 - 2¹⁹ = 255720989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256245217) 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, 238 + ... + 22639.

It is an arithmetic number, because the mean of its divisors is an integer number (33493392).

Almost surely, 2^256245277 is an apocalyptic number.

It is an amenable number.

256245277 is a deficient number, since it is larger than the sum of its proper divisors (11701859).

256245277 is a wasteful number, since it uses less digits than its factorization.

256245277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23387.

The product of its digits is 235200, while the sum is 40.

The square root of 256245277 is about 16007.6630711669. The cubic root of 256245277 is about 635.1631440612.

The spelling of 256245277 in words is "two hundred fifty-six million, two hundred forty-five thousand, two hundred seventy-seven".