1256001316 has 12 divisors (see below), whose sum is σ = 2200141440. Its totient is φ = 627389480.

The previous prime is 1256001283. The next prime is 1256001317. The reversal of 1256001316 is 6131006521.

It is not an unprimeable number, because it can be changed into a prime (1256001317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148156 + ... + 156403.

It is an arithmetic number, because the mean of its divisors is an integer number (183345120).

Almost surely, 2^1256001316 is an apocalyptic number.

It is an amenable number.

1256001316 is a deficient number, since it is larger than the sum of its proper divisors (944140124).

1256001316 is a wasteful number, since it uses less digits than its factorization.

1256001316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305594 (or 305592 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1256001316 is about 35440.1088598780. The cubic root of 1256001316 is about 1078.9385192484.

Adding to 1256001316 its reverse (6131006521), we get a palindrome (7387007837).

The spelling of 1256001316 in words is "one billion, two hundred fifty-six million, one thousand, three hundred sixteen".