1125081945 has 48 divisors (see below), whose sum is σ = 2103192000. Its totient is φ = 553085568.

The previous prime is 1125081929. The next prime is 1125081959. The reversal of 1125081945 is 5491805211.

It is not a de Polignac number, because 1125081945 - 2⁴ = 1125081929 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 749806 + ... + 751304.

It is an arithmetic number, because the mean of its divisors is an integer number (43816500).

Almost surely, 2^1125081945 is an apocalyptic number.

1125081945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125081945 is a deficient number, since it is larger than the sum of its proper divisors (978110055).

1125081945 is a wasteful number, since it uses less digits than its factorization.

1125081945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1125081945 is about 33542.2412041891. The cubic root of 1125081945 is about 1040.0671631305.

The spelling of 1125081945 in words is "one billion, one hundred twenty-five million, eighty-one thousand, nine hundred forty-five".