256012200135 has 24 divisors (see below), whose sum is σ = 443977292304. Its totient is φ = 136471282560.

The previous prime is 256012200131. The next prime is 256012200149. The reversal of 256012200135 is 531002210652.

It is a happy number.

256012200135 is a `hidden beast` number, since 2 + 5 + 601 + 2 + 20 + 0 + 1 + 35 = 666.

256012200135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256012200135 - 2² = 256012200131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256012200099 and 256012200108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256012200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1337601 + ... + 1516970.

It is an arithmetic number, because the mean of its divisors is an integer number (18499053846).

Almost surely, 2^256012200135 is an apocalyptic number.

256012200135 is a deficient number, since it is larger than the sum of its proper divisors (187965092169).

256012200135 is a wasteful number, since it uses less digits than its factorization.

256012200135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856575 (or 2856572 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 256012200135 its reverse (531002210652), we get a palindrome (787014410787).

The spelling of 256012200135 in words is "two hundred fifty-six billion, twelve million, two hundred thousand, one hundred thirty-five".