1125255549 has 16 divisors (see below), whose sum is σ = 1652037120. Its totient is φ = 675597360.

The previous prime is 1125255503. The next prime is 1125255557. The reversal of 1125255549 is 9455525211.

It is not a de Polignac number, because 1125255549 - 2⁸ = 1125255293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125255589) 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 15 ways as a sum of consecutive naturals, for example, 155809 + ... + 162870.

It is an arithmetic number, because the mean of its divisors is an integer number (103252320).

Almost surely, 2^1125255549 is an apocalyptic number.

It is an amenable number.

1125255549 is a deficient number, since it is larger than the sum of its proper divisors (526781571).

1125255549 is a wasteful number, since it uses less digits than its factorization.

1125255549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318800.

The product of its digits is 90000, while the sum is 39.

The square root of 1125255549 is about 33544.8289457556. The cubic root of 1125255549 is about 1040.1206556885.

The spelling of 1125255549 in words is "one billion, one hundred twenty-five million, two hundred fifty-five thousand, five hundred forty-nine".