256265335236 has 24 divisors (see below), whose sum is σ = 599513693184. Its totient is φ = 85198743520.

The previous prime is 256265335219. The next prime is 256265335241. The reversal of 256265335236 is 632533562652.

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, 27874575 + ... + 27883766.

It is an arithmetic number, because the mean of its divisors is an integer number (24979737216).

Almost surely, 2^256265335236 is an apocalyptic number.

It is an amenable number.

256265335236 is an abundant number, since it is smaller than the sum of its proper divisors (343248357948).

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

256265335236 is a wasteful number, since it uses less digits than its factorization.

256265335236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55758731 (or 55758729 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 48.

Adding to 256265335236 its reverse (632533562652), we get a palindrome (888798897888).

The spelling of 256265335236 in words is "two hundred fifty-six billion, two hundred sixty-five million, three hundred thirty-five thousand, two hundred thirty-six".