256245355364 has 12 divisors (see below), whose sum is σ = 448434004284. Its totient is φ = 128121354144.

The previous prime is 256245355351. The next prime is 256245355367. The reversal of 256245355364 is 463553542652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108629568100 + 147615787264 = 329590^2 + 384208^2 .

It is not an unprimeable number, because it can be changed into a prime (256245355367) 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, 199022 + ... + 743034.

It is an arithmetic number, because the mean of its divisors is an integer number (37369500357).

Almost surely, 2^256245355364 is an apocalyptic number.

It is an amenable number.

256245355364 is a deficient number, since it is larger than the sum of its proper divisors (192188648920).

256245355364 is a wasteful number, since it uses less digits than its factorization.

256245355364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661774 (or 661772 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 50.

The spelling of 256245355364 in words is "two hundred fifty-six billion, two hundred forty-five million, three hundred fifty-five thousand, three hundred sixty-four".