256481027245 has 16 divisors (see below), whose sum is σ = 318899358720. Its totient is φ = 197901306304.

The previous prime is 256481027239. The next prime is 256481027249. The reversal of 256481027245 is 542720184652.

It is a cyclic number.

It is not a de Polignac number, because 256481027245 - 2¹⁷ = 256480896173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256481027195 and 256481027204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256481027249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8186509 + ... + 8217778.

It is an arithmetic number, because the mean of its divisors is an integer number (19931209920).

Almost surely, 2^256481027245 is an apocalyptic number.

It is an amenable number.

256481027245 is a deficient number, since it is larger than the sum of its proper divisors (62418331475).

256481027245 is a wasteful number, since it uses less digits than its factorization.

256481027245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404404.

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 256481027245 in words is "two hundred fifty-six billion, four hundred eighty-one million, twenty-seven thousand, two hundred forty-five".