256254168 has 64 divisors (see below), whose sum is σ = 657324000. Its totient is φ = 83220480.

The previous prime is 256254161. The next prime is 256254181. The reversal of 256254168 is 861452652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256254161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164658 + ... + 166206.

Almost surely, 2^256254168 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 256254168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328662000).

256254168 is an abundant number, since it is smaller than the sum of its proper divisors (401069832).

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

256254168 is a wasteful number, since it uses less digits than its factorization.

256254168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1728 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 256254168 is about 16007.9407795007. The cubic root of 256254168 is about 635.1704901090.

The spelling of 256254168 in words is "two hundred fifty-six million, two hundred fifty-four thousand, one hundred sixty-eight".