256025222616 has 64 divisors (see below), whose sum is σ = 641193246720. Its totient is φ = 85191194880.

The previous prime is 256025222561. The next prime is 256025222639. The reversal of 256025222616 is 616222520652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39549556 + ... + 39556028.

It is an arithmetic number, because the mean of its divisors is an integer number (10018644480).

Almost surely, 2^256025222616 is an apocalyptic number.

It is an amenable number.

256025222616 is an abundant number, since it is smaller than the sum of its proper divisors (385168024104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256025222616 is a wasteful number, since it uses less digits than its factorization.

256025222616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136 (or 9132 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 256025222616 in words is "two hundred fifty-six billion, twenty-five million, two hundred twenty-two thousand, six hundred sixteen".