1256274484 has 6 divisors (see below), whose sum is σ = 2198480354. Its totient is φ = 628137240.

The previous prime is 1256274469. The next prime is 1256274491. The reversal of 1256274484 is 4844726521.

It can be written as a sum of positive squares in only one way, i.e., 642622500 + 613651984 = 25350^2 + 24772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1256274484.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157034307 + ... + 157034314.

Almost surely, 2^1256274484 is an apocalyptic number.

It is an amenable number.

1256274484 is a deficient number, since it is larger than the sum of its proper divisors (942205870).

1256274484 is a wasteful number, since it uses less digits than its factorization.

1256274484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314068625 (or 314068623 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 1256274484 is about 35443.9625888528. The cubic root of 1256274484 is about 1079.0167331030.

The spelling of 1256274484 in words is "one billion, two hundred fifty-six million, two hundred seventy-four thousand, four hundred eighty-four".