1275716256 has 48 divisors (see below), whose sum is σ = 3354478848. Its totient is φ = 424512000.

The previous prime is 1275716251. The next prime is 1275716257. The reversal of 1275716256 is 6526175721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1275716251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46641 + ... + 68751.

It is an arithmetic number, because the mean of its divisors is an integer number (69884976).

Almost surely, 2^1275716256 is an apocalyptic number.

1275716256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1275716256 is an abundant number, since it is smaller than the sum of its proper divisors (2078762592).

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

1275716256 is a wasteful number, since it uses less digits than its factorization.

1275716256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22725 (or 22717 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 1275716256 is about 35717.1703246492. The cubic root of 1275716256 is about 1084.5544564382.

The spelling of 1275716256 in words is "one billion, two hundred seventy-five million, seven hundred sixteen thousand, two hundred fifty-six".