256512525235630 has 32 divisors (see below), whose sum is σ = 475092056926368. Its totient is φ = 99672343056000.

The previous prime is 256512525235601. The next prime is 256512525235639. The reversal of 256512525235630 is 36532525215652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256512525235639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2395916256 + ... + 2396023315.

It is an arithmetic number, because the mean of its divisors is an integer number (14846626778949).

Almost surely, 2^{256512525235630} is an apocalyptic number.

256512525235630 is a deficient number, since it is larger than the sum of its proper divisors (218579531690738).

256512525235630 is a wasteful number, since it uses less digits than its factorization.

256512525235630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791939732.

The product of its (nonzero) digits is 16200000, while the sum is 52.

The spelling of 256512525235630 in words is "two hundred fifty-six trillion, five hundred twelve billion, five hundred twenty-five million, two hundred thirty-five thousand, six hundred thirty".