1123747825 has 12 divisors (see below), whose sum is σ = 1441498140. Its totient is φ = 867997760.

The previous prime is 1123747789. The next prime is 1123747871. The reversal of 1123747825 is 5287473211.

It can be written as a sum of positive squares in 6 ways, for example, as 3908529 + 1119839296 = 1977^2 + 33464^2 .

It is not a de Polignac number, because 1123747825 - 2⁷ = 1123747697 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 774274 + ... + 775723.

It is an arithmetic number, because the mean of its divisors is an integer number (120124845).

Almost surely, 2^1123747825 is an apocalyptic number.

It is an amenable number.

1123747825 is a deficient number, since it is larger than the sum of its proper divisors (317750315).

1123747825 is a wasteful number, since it uses less digits than its factorization.

1123747825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550036 (or 1550031 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 1123747825 is about 33522.3481426943. The cubic root of 1123747825 is about 1039.6558973163.

The spelling of 1123747825 in words is "one billion, one hundred twenty-three million, seven hundred forty-seven thousand, eight hundred twenty-five".