256260713284 has 27 divisors (see below), whose sum is σ = 452242119357. Its totient is φ = 127057672224.

The previous prime is 256260713249. The next prime is 256260713287. The reversal of 256260713284 is 482317062652.

The square root of 256260713284 is 506222.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 187549624900 + 68711088384 = 433070^2 + 262128^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256260713287) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128579392 + ... + 128581384.

Almost surely, 2^256260713284 is an apocalyptic number.

256260713284 is the 506222-nd square number.

It is an amenable number.

256260713284 is a deficient number, since it is larger than the sum of its proper divisors (195981406073).

256260713284 is an frugal number, since it uses more digits than its factorization.

256260713284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 256260713284 in words is "two hundred fifty-six billion, two hundred sixty million, seven hundred thirteen thousand, two hundred eighty-four".