256180508232 has 128 divisors (see below), whose sum is σ = 701545881600. Its totient is φ = 77312102400.

The previous prime is 256180508231. The next prime is 256180508257. The reversal of 256180508232 is 232805081652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (256180508231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72963357 + ... + 72966867.

It is an arithmetic number, because the mean of its divisors is an integer number (5480827200).

Almost surely, 2^256180508232 is an apocalyptic number.

256180508232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256180508232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350772940800).

256180508232 is an abundant number, since it is smaller than the sum of its proper divisors (445365373368).

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

256180508232 is a wasteful number, since it uses less digits than its factorization.

256180508232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587 (or 4583 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

Adding to 256180508232 its reverse (232805081652), we get a palindrome (488985589884).

The spelling of 256180508232 in words is "two hundred fifty-six billion, one hundred eighty million, five hundred eight thousand, two hundred thirty-two".