256306025460 has 24 divisors (see below), whose sum is σ = 717656871456. Its totient is φ = 68348273440.

The previous prime is 256306025401. The next prime is 256306025471. The reversal of 256306025460 is 64520603652.

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, 2135883486 + ... + 2135883605.

It is an arithmetic number, because the mean of its divisors is an integer number (29902369644).

Almost surely, 2^256306025460 is an apocalyptic number.

256306025460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256306025460 is an abundant number, since it is smaller than the sum of its proper divisors (461350845996).

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

256306025460 is a wasteful number, since it uses less digits than its factorization.

256306025460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271767103 (or 4271767101 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 256306025460 in words is "two hundred fifty-six billion, three hundred six million, twenty-five thousand, four hundred sixty".