1256560002 has 24 divisors (see below), whose sum is σ = 2723847984. Its totient is φ = 418653144.

The previous prime is 1256560001. The next prime is 1256560013. The reversal of 1256560002 is 2000656521.

1256560002 is a `hidden beast` number, since 1 + 2 + 5 + 656 + 0 + 0 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1256560001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24813 + ... + 55935.

It is an arithmetic number, because the mean of its divisors is an integer number (113493666).

Almost surely, 2^1256560002 is an apocalyptic number.

1256560002 is an abundant number, since it is smaller than the sum of its proper divisors (1467287982).

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

1256560002 is a wasteful number, since it uses less digits than its factorization.

1256560002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33374 (or 33371 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1256560002 is about 35447.9900981706. The cubic root of 1256560002 is about 1079.0984709098.

The spelling of 1256560002 in words is "one billion, two hundred fifty-six million, five hundred sixty thousand, two".