256225880 has 16 divisors (see below), whose sum is σ = 576508320. Its totient is φ = 102490336.

The previous prime is 256225873. The next prime is 256225919. The reversal of 256225880 is 88522652.

It is a happy number.

256225880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202784 + ... + 3202863.

It is an arithmetic number, because the mean of its divisors is an integer number (36031770).

Almost surely, 2^256225880 is an apocalyptic number.

256225880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256225880 is an abundant number, since it is smaller than the sum of its proper divisors (320282440).

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

256225880 is a wasteful number, since it uses less digits than its factorization.

256225880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405658 (or 6405654 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 256225880 is about 16007.0571936256. The cubic root of 256225880 is about 635.1471170076.

The spelling of 256225880 in words is "two hundred fifty-six million, two hundred twenty-five thousand, eight hundred eighty".