256222602145 has 8 divisors (see below), whose sum is σ = 307470070656. Its totient is φ = 204976116336.

The previous prime is 256222602143. The next prime is 256222602157. The reversal of 256222602145 is 541206222652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256222602145 - 2¹ = 256222602143 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580554 + ... + 921676.

It is an arithmetic number, because the mean of its divisors is an integer number (38433758832).

Almost surely, 2^256222602145 is an apocalyptic number.

It is an amenable number.

256222602145 is a deficient number, since it is larger than the sum of its proper divisors (51247468511).

256222602145 is a wasteful number, since it uses less digits than its factorization.

256222602145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491351.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 256222602145 its reverse (541206222652), we get a palindrome (797428824797).

The spelling of 256222602145 in words is "two hundred fifty-six billion, two hundred twenty-two million, six hundred two thousand, one hundred forty-five".