256288725234 has 12 divisors (see below), whose sum is σ = 555292238046. Its totient is φ = 85429575072.

The previous prime is 256288725233. The next prime is 256288725257. The reversal of 256288725234 is 432527882652.

256288725234 is a `hidden beast` number, since 2 + 5 + 628 + 8 + 7 + 2 + 5 + 2 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 229246567209 + 27042158025 = 478797^2 + 164445^2 .

It is a super-3 number, since 3×256288725234³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256288725233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7119131239 + ... + 7119131274.

Almost surely, 2^256288725234 is an apocalyptic number.

256288725234 is an abundant number, since it is smaller than the sum of its proper divisors (299003512812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256288725234 is a wasteful number, since it uses less digits than its factorization.

256288725234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238262521 (or 14238262518 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 54.

The spelling of 256288725234 in words is "two hundred fifty-six billion, two hundred eighty-eight million, seven hundred twenty-five thousand, two hundred thirty-four".