1125552249 has 12 divisors (see below), whose sum is σ = 1628925012. Its totient is φ = 748924800.

The previous prime is 1125552227. The next prime is 1125552251. The reversal of 1125552249 is 9422555211.

1125552249 is a `hidden beast` number, since 1 + 125 + 5 + 522 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136890000 + 988662249 = 11700^2 + 31443^2 .

It is not a de Polignac number, because 1125552249 - 2⁵ = 1125552217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125552349) 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, 115332 + ... + 124709.

It is an arithmetic number, because the mean of its divisors is an integer number (135743751).

Almost surely, 2^1125552249 is an apocalyptic number.

It is an amenable number.

1125552249 is a deficient number, since it is larger than the sum of its proper divisors (503372763).

1125552249 is a wasteful number, since it uses less digits than its factorization.

1125552249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240568 (or 240565 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 1125552249 is about 33549.2510944730. The cubic root of 1125552249 is about 1040.2120650515.

It can be divided in two parts, 11255 and 52249, that added together give a square (63504 = 252²).

The spelling of 1125552249 in words is "one billion, one hundred twenty-five million, five hundred fifty-two thousand, two hundred forty-nine".