256223315032 has 16 divisors (see below), whose sum is σ = 480463729200. Its totient is φ = 128099653920.

The previous prime is 256223315017. The next prime is 256223315039. The reversal of 256223315032 is 230513322652.

It is a happy number.

It is a super-2 number, since 2×256223315032² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256223315039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409407 + ... + 1580782.

It is an arithmetic number, because the mean of its divisors is an integer number (30028983075).

Almost surely, 2^256223315032 is an apocalyptic number.

It is an amenable number.

256223315032 is a deficient number, since it is larger than the sum of its proper divisors (224240414168).

256223315032 is a wasteful number, since it uses less digits than its factorization.

256223315032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000906 (or 3000902 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 256223315032 its reverse (230513322652), we get a palindrome (486736637684).

The spelling of 256223315032 in words is "two hundred fifty-six billion, two hundred twenty-three million, three hundred fifteen thousand, thirty-two".