256084250977 has 4 divisors (see below), whose sum is σ = 264914742420. Its totient is φ = 247253759536.

The previous prime is 256084250953. The next prime is 256084251029. The reversal of 256084250977 is 779052480652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135259186176 + 120825064801 = 367776^2 + 347599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256084250977 is a prime.

It is a super-2 number, since 2×256084250977² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256084250077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4415245678 + ... + 4415245735.

It is an arithmetic number, because the mean of its divisors is an integer number (66228685605).

Almost surely, 2^256084250977 is an apocalyptic number.

It is an amenable number.

256084250977 is a deficient number, since it is larger than the sum of its proper divisors (8830491443).

256084250977 is an equidigital number, since it uses as much as digits as its factorization.

256084250977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830491442.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 256084250977 in words is "two hundred fifty-six billion, eighty-four million, two hundred fifty thousand, nine hundred seventy-seven".