256251213032 has 16 divisors (see below), whose sum is σ = 480476512800. Its totient is φ = 128124142960.

The previous prime is 256251213011. The next prime is 256251213077. The reversal of 256251213032 is 230312152652.

It is a self number, because there is not a number n which added to its sum of digits gives 256251213032.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049819 + ... + 1270677.

It is an arithmetic number, because the mean of its divisors is an integer number (30029782050).

Almost surely, 2^256251213032 is an apocalyptic number.

It is an amenable number.

256251213032 is a deficient number, since it is larger than the sum of its proper divisors (224225299768).

256251213032 is a wasteful number, since it uses less digits than its factorization.

256251213032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365896 (or 365892 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 256251213032 its reverse (230312152652), we get a palindrome (486563365684).

The spelling of 256251213032 in words is "two hundred fifty-six billion, two hundred fifty-one million, two hundred thirteen thousand, thirty-two".