256415325366 has 16 divisors (see below), whose sum is σ = 525338715888. Its totient is φ = 83387097600.

The previous prime is 256415325347. The next prime is 256415325421. The reversal of 256415325366 is 663523514652.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521169115 + ... + 521169606.

It is an arithmetic number, because the mean of its divisors is an integer number (32833669743).

Almost surely, 2^256415325366 is an apocalyptic number.

256415325366 is an abundant number, since it is smaller than the sum of its proper divisors (268923390522).

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

256415325366 is a wasteful number, since it uses less digits than its factorization.

256415325366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042338767.

The product of its digits is 3888000, while the sum is 48.

The spelling of 256415325366 in words is "two hundred fifty-six billion, four hundred fifteen million, three hundred twenty-five thousand, three hundred sixty-six".