1125193305 has 16 divisors (see below), whose sum is σ = 1802931264. Its totient is φ = 599229120.

The previous prime is 1125193291. The next prime is 1125193309. The reversal of 1125193305 is 5033915211.

It is not a de Polignac number, because 1125193305 - 2⁶ = 1125193241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125193309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43914 + ... + 64643.

It is an arithmetic number, because the mean of its divisors is an integer number (112683204).

Almost surely, 2^1125193305 is an apocalyptic number.

1125193305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125193305 is a deficient number, since it is larger than the sum of its proper divisors (677737959).

1125193305 is a wasteful number, since it uses less digits than its factorization.

1125193305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109256.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 1125193305 is about 33543.9011595253. The cubic root of 1125193305 is about 1040.1014770927.

The spelling of 1125193305 in words is "one billion, one hundred twenty-five million, one hundred ninety-three thousand, three hundred five".