256275616 has 48 divisors (see below), whose sum is σ = 520781184. Its totient is φ = 124049664.

The previous prime is 256275611. The next prime is 256275623. The reversal of 256275616 is 616572652.

It is not an unprimeable number, because it can be changed into a prime (256275611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310981 + ... + 311803.

It is an arithmetic number, because the mean of its divisors is an integer number (10849608).

Almost surely, 2^256275616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256275616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260390592).

256275616 is an abundant number, since it is smaller than the sum of its proper divisors (264505568).

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

256275616 is a wasteful number, since it uses less digits than its factorization.

256275616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1125 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 256275616 is about 16008.6106830043. The cubic root of 256275616 is about 635.1882104798.

The spelling of 256275616 in words is "two hundred fifty-six million, two hundred seventy-five thousand, six hundred sixteen".