2011125945 has 8 divisors (see below), whose sum is σ = 3217801536. Its totient is φ = 1072600496.

The previous prime is 2011125943. The next prime is 2011125971. The reversal of 2011125945 is 5495211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011125945 - 2¹ = 2011125943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011125943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67037517 + ... + 67037546.

It is an arithmetic number, because the mean of its divisors is an integer number (402225192).

Almost surely, 2^2011125945 is an apocalyptic number.

It is an amenable number.

2011125945 is a deficient number, since it is larger than the sum of its proper divisors (1206675591).

2011125945 is a wasteful number, since it uses less digits than its factorization.

2011125945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134075071.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 2011125945 is about 44845.5788790824. The cubic root of 2011125945 is about 1262.2530330240.

It can be divided in two parts, 20111 and 25945, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 2011125945 in words is "two billion, eleven million, one hundred twenty-five thousand, nine hundred forty-five".