1125205947 has 12 divisors (see below), whose sum is σ = 1626138904. Its totient is φ = 749748960.

The previous prime is 1125205937. The next prime is 1125205981. The reversal of 1125205947 is 7495025211.

1125205947 is a `hidden beast` number, since 1 + 12 + 52 + 0 + 594 + 7 = 666.

It is not a de Polignac number, because 1125205947 - 2⁸ = 1125205691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125205937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13429 + ... + 49302.

Almost surely, 2^1125205947 is an apocalyptic number.

1125205947 is a deficient number, since it is larger than the sum of its proper divisors (500932957).

1125205947 is a wasteful number, since it uses less digits than its factorization.

1125205947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64730 (or 64727 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1125205947 is about 33544.0895986163. The cubic root of 1125205947 is about 1040.1053723978.

The spelling of 1125205947 in words is "one billion, one hundred twenty-five million, two hundred five thousand, nine hundred forty-seven".