256520414252 has 12 divisors (see below), whose sum is σ = 448979527080. Its totient is φ = 128240549376.

The previous prime is 256520414237. The next prime is 256520414291. The reversal of 256520414252 is 252414025652.

256520414252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 4885058 + ... + 4937289.

It is an arithmetic number, because the mean of its divisors is an integer number (37414960590).

Almost surely, 2^256520414252 is an apocalyptic number.

It is an amenable number.

256520414252 is a deficient number, since it is larger than the sum of its proper divisors (192459112828).

256520414252 is a wasteful number, since it uses less digits than its factorization.

256520414252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828880 (or 9828878 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 256520414252 in words is "two hundred fifty-six billion, five hundred twenty million, four hundred fourteen thousand, two hundred fifty-two".