256410422255 has 96 divisors (see below), whose sum is σ = 359169074880. Its totient is φ = 174620344320.

The previous prime is 256410422249. The next prime is 256410422339. The reversal of 256410422255 is 552224014652.

It is a de Polignac number, because none of the positive numbers 2^k-256410422255 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 198613160 + ... + 198614450.

It is an arithmetic number, because the mean of its divisors is an integer number (3741344530).

Almost surely, 2^256410422255 is an apocalyptic number.

256410422255 is a deficient number, since it is larger than the sum of its proper divisors (102758652625).

256410422255 is a wasteful number, since it uses less digits than its factorization.

256410422255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 256410422255 in words is "two hundred fifty-six billion, four hundred ten million, four hundred twenty-two thousand, two hundred fifty-five".