256025666044 has 24 divisors (see below), whose sum is σ = 449413066368. Its totient is φ = 127622476080.

The previous prime is 256025666041. The next prime is 256025666101. The reversal of 256025666044 is 440666520652.

It is a junction number, because it is equal to n+sod(n) for n = 256025665985 and 256025666003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256025666041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838179 + ... + 1972549.

It is an arithmetic number, because the mean of its divisors is an integer number (18725544432).

Almost surely, 2^256025666044 is an apocalyptic number.

It is an amenable number.

256025666044 is a deficient number, since it is larger than the sum of its proper divisors (193387400324).

256025666044 is a wasteful number, since it uses less digits than its factorization.

256025666044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135825 (or 135823 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 256025666044 in words is "two hundred fifty-six billion, twenty-five million, six hundred sixty-six thousand, forty-four".