256613023525252 has 6 divisors (see below), whose sum is σ = 449072791169198. Its totient is φ = 128306511762624.

The previous prime is 256613023525241. The next prime is 256613023525289. The reversal of 256613023525252 is 252525320316652.

It can be written as a sum of positive squares in only one way, i.e., 144331534605636 + 112281488919616 = 12013806^2 + 10596296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256613023525196 and 256613023525205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32076627940653 + ... + 32076627940660.

Almost surely, 2^{256613023525252} is an apocalyptic number.

It is an amenable number.

256613023525252 is a deficient number, since it is larger than the sum of its proper divisors (192459767643946).

256613023525252 is a wasteful number, since it uses less digits than its factorization.

256613023525252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64153255881317 (or 64153255881315 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 256613023525252 in words is "two hundred fifty-six trillion, six hundred thirteen billion, twenty-three million, five hundred twenty-five thousand, two hundred fifty-two".