1256272484 has 6 divisors (see below), whose sum is σ = 2198476854. Its totient is φ = 628136240.

The previous prime is 1256272481. The next prime is 1256272487. The reversal of 1256272484 is 4842726521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1256272481) and next prime (1256272487).

It can be written as a sum of positive squares in only one way, i.e., 1230466084 + 25806400 = 35078^2 + 5080^2 .

It is not an unprimeable number, because it can be changed into a prime (1256272481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157034057 + ... + 157034064.

It is an arithmetic number, because the mean of its divisors is an integer number (366412809).

Almost surely, 2^1256272484 is an apocalyptic number.

It is an amenable number.

1256272484 is a deficient number, since it is larger than the sum of its proper divisors (942204370).

1256272484 is a wasteful number, since it uses less digits than its factorization.

1256272484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314068125 (or 314068123 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 1256272484 is about 35443.9343752919. The cubic root of 1256272484 is about 1079.0161605013.

The spelling of 1256272484 in words is "one billion, two hundred fifty-six million, two hundred seventy-two thousand, four hundred eighty-four".