1125661960 has 32 divisors (see below), whose sum is σ = 2552693760. Its totient is φ = 446717376.

The previous prime is 1125661939. The next prime is 1125661991. The reversal of 1125661960 is 691665211.

It is a super-2 number, since 2×1125661960² = 2534229696382083200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105714 + ... + 115873.

It is an arithmetic number, because the mean of its divisors is an integer number (79771680).

Almost surely, 2^1125661960 is an apocalyptic number.

1125661960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125661960 is an abundant number, since it is smaller than the sum of its proper divisors (1427031800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125661960 is a wasteful number, since it uses less digits than its factorization.

1125661960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221725 (or 221721 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1125661960 is about 33550.8861283871. The cubic root of 1125661960 is about 1040.2458614977.

The spelling of 1125661960 in words is "one billion, one hundred twenty-five million, six hundred sixty-one thousand, nine hundred sixty".