1256888820056 has 48 divisors (see below), whose sum is σ = 2408008969800. Its totient is φ = 614995600128.

The previous prime is 1256888820049. The next prime is 1256888820067. The reversal of 1256888820056 is 6500288886521.

It is a junction number, because it is equal to n+sod(n) for n = 1256888819977 and 1256888820004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5530475 + ... + 5753253.

Almost surely, 2^{1256888820056} is an apocalyptic number.

It is an amenable number.

1256888820056 is a deficient number, since it is larger than the sum of its proper divisors (1151120149744).

1256888820056 is a wasteful number, since it uses less digits than its factorization.

1256888820056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223056 (or 222973 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 59.

The spelling of 1256888820056 in words is "one trillion, two hundred fifty-six billion, eight hundred eighty-eight million, eight hundred twenty thousand, fifty-six".