1125661075 has 36 divisors (see below), whose sum is σ = 1771339752. Its totient is φ = 701702400.

The previous prime is 1125661067. The next prime is 1125661091. The reversal of 1125661075 is 5701665211.

It is not a de Polignac number, because 1125661075 - 2³ = 1125661067 is a prime.

It is a super-2 number, since 2×1125661075² = 2534225711540311250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1125661075.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28294 + ... + 55243.

It is an arithmetic number, because the mean of its divisors is an integer number (49203882).

Almost surely, 2^1125661075 is an apocalyptic number.

1125661075 is a deficient number, since it is larger than the sum of its proper divisors (645678677).

1125661075 is a wasteful number, since it uses less digits than its factorization.

1125661075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83572 (or 83560 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1125661075 is about 33550.8729394631. The cubic root of 1125661075 is about 1040.2455888825.

The spelling of 1125661075 in words is "one billion, one hundred twenty-five million, six hundred sixty-one thousand, seventy-five".