1125581274 has 12 divisors (see below), whose sum is σ = 2438759466. Its totient is φ = 375193752.

The previous prime is 1125581267. The next prime is 1125581279. The reversal of 1125581274 is 4721855211.

It is a happy number.

1125581274 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 581 + 2 + 74 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1056575025 + 69006249 = 32505^2 + 8307^2 .

It is not an unprimeable number, because it can be changed into a prime (1125581279) 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 in 5 ways as a sum of consecutive naturals, for example, 31266129 + ... + 31266164.

Almost surely, 2^1125581274 is an apocalyptic number.

1125581274 is an abundant number, since it is smaller than the sum of its proper divisors (1313178192).

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

1125581274 is a wasteful number, since it uses less digits than its factorization.

1125581274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62532301 (or 62532298 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 1125581274 is about 33549.6836646786. The cubic root of 1125581274 is about 1040.2210064092.

It can be divided in two parts, 11255 and 81274, that added together give a palindrome (92529).

The spelling of 1125581274 in words is "one billion, one hundred twenty-five million, five hundred eighty-one thousand, two hundred seventy-four".