1256112446 has 16 divisors (see below), whose sum is σ = 1891042944. Its totient is φ = 625770144.

The previous prime is 1256112443. The next prime is 1256112491. The reversal of 1256112446 is 6442116521.

It is a super-2 number, since 2×1256112446² = 3155636953992205832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256112443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034936 + ... + 1036148.

It is an arithmetic number, because the mean of its divisors is an integer number (118190184).

Almost surely, 2^1256112446 is an apocalyptic number.

1256112446 is a deficient number, since it is larger than the sum of its proper divisors (634930498).

1256112446 is a wasteful number, since it uses less digits than its factorization.

1256112446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its digits is 11520, while the sum is 32.

The square root of 1256112446 is about 35441.6766815567. The cubic root of 1256112446 is about 1078.9703395180.

Adding to 1256112446 its reverse (6442116521), we get a palindrome (7698228967).

The spelling of 1256112446 in words is "one billion, two hundred fifty-six million, one hundred twelve thousand, four hundred forty-six".