256621526600255 has 8 divisors (see below), whose sum is σ = 309725865631872. Its totient is φ = 204110532139168.

The previous prime is 256621526600239. The next prime is 256621526600267. The reversal of 256621526600255 is 552006625126652.

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 256621526600255 - 2⁴ = 256621526600239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256621526600197 and 256621526600206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148336141679 + ... + 148336143408.

It is an arithmetic number, because the mean of its divisors is an integer number (38715733203984).

Almost surely, 2^{256621526600255} is an apocalyptic number.

256621526600255 is a deficient number, since it is larger than the sum of its proper divisors (53104339031617).

256621526600255 is a wasteful number, since it uses less digits than its factorization.

256621526600255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296672285265.

The product of its (nonzero) digits is 12960000, while the sum is 53.

The spelling of 256621526600255 in words is "two hundred fifty-six trillion, six hundred twenty-one billion, five hundred twenty-six million, six hundred thousand, two hundred fifty-five".