1125306549 has 12 divisors (see below), whose sum is σ = 1641537612. Its totient is φ = 742776000.

The previous prime is 1125306529. The next prime is 1125306577. The reversal of 1125306549 is 9456035211.

1125306549 is a `hidden beast` number, since 112 + 530 + 6 + 5 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 535691025 + 589615524 = 23145^2 + 24282^2 .

It is not a de Polignac number, because 1125306549 - 2⁹ = 1125306037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125306529) 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 11 ways as a sum of consecutive naturals, for example, 618072 + ... + 619889.

It is an arithmetic number, because the mean of its divisors is an integer number (136794801).

Almost surely, 2^1125306549 is an apocalyptic number.

It is an amenable number.

1125306549 is a deficient number, since it is larger than the sum of its proper divisors (516231063).

1125306549 is a wasteful number, since it uses less digits than its factorization.

1125306549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238068 (or 1238065 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1125306549 is about 33545.5891139208. The cubic root of 1125306549 is about 1040.1363692604.

The spelling of 1125306549 in words is "one billion, one hundred twenty-five million, three hundred six thousand, five hundred forty-nine".