256252662245 has 8 divisors (see below), whose sum is σ = 308552695416. Its totient is φ = 204302462656.

The previous prime is 256252662227. The next prime is 256252662299. The reversal of 256252662245 is 542266252652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82689603364 + 173563058881 = 287558^2 + 416609^2 .

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 256252662245 - 2⁶ = 256252662181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256252662245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87456782 + ... + 87459711.

It is an arithmetic number, because the mean of its divisors is an integer number (38569086927).

Almost surely, 2^256252662245 is an apocalyptic number.

It is an amenable number.

256252662245 is a deficient number, since it is larger than the sum of its proper divisors (52300033171).

256252662245 is a wasteful number, since it uses less digits than its factorization.

256252662245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174916791.

The product of its digits is 3456000, while the sum is 47.

The spelling of 256252662245 in words is "two hundred fifty-six billion, two hundred fifty-two million, six hundred sixty-two thousand, two hundred forty-five".