256583385652 has 12 divisors (see below), whose sum is σ = 489841009056. Its totient is φ = 116628811640.

The previous prime is 256583385607. The next prime is 256583385689.

It is a happy number.

256583385652 is nontrivially palindromic in base 10.

It is a congruent number.

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, 2915720248 + ... + 2915720335.

It is an arithmetic number, because the mean of its divisors is an integer number (40820084088).

Almost surely, 2^256583385652 is an apocalyptic number.

256583385652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256583385652 is a deficient number, since it is larger than the sum of its proper divisors (233257623404).

256583385652 is a wasteful number, since it uses less digits than its factorization.

256583385652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831440598 (or 5831440596 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 58.

The spelling of 256583385652 in words is "two hundred fifty-six billion, five hundred eighty-three million, three hundred eighty-five thousand, six hundred fifty-two".