256222602144 has 36 divisors (see below), whose sum is σ = 728633025666. Its totient is φ = 85407533952.

The previous prime is 256222602143. The next prime is 256222602157. The reversal of 256222602144 is 441206222652.

256222602144 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 2 + 2 + 602 + 1 + 44 = 666.

256222602144 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 216057632400 + 40164969744 = 464820^2 + 200412^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 256222602099 and 256222602108.

It is not an unprimeable number, because it can be changed into a prime (256222602143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444830619 + ... + 444831194.

Almost surely, 2^256222602144 is an apocalyptic number.

256222602144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256222602144 is an abundant number, since it is smaller than the sum of its proper divisors (472410423522).

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

256222602144 is a wasteful number, since it uses less digits than its factorization.

256222602144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889661829 (or 889661818 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 256222602144 its reverse (441206222652), we get a palindrome (697428824796).

The spelling of 256222602144 in words is "two hundred fifty-six billion, two hundred twenty-two million, six hundred two thousand, one hundred forty-four".