1125646540 has 12 divisors (see below), whose sum is σ = 2363857776. Its totient is φ = 450258608.

The previous prime is 1125646537. The next prime is 1125646547. The reversal of 1125646540 is 456465211.

It is a junction number, because it is equal to n+sod(n) for n = 1125646496 and 1125646505.

It is not an unprimeable number, because it can be changed into a prime (1125646547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28141144 + ... + 28141183.

It is an arithmetic number, because the mean of its divisors is an integer number (196988148).

Almost surely, 2^1125646540 is an apocalyptic number.

1125646540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125646540 is an abundant number, since it is smaller than the sum of its proper divisors (1238211236).

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

1125646540 is a wasteful number, since it uses less digits than its factorization.

1125646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56282336 (or 56282334 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1125646540 is about 33550.6563274103. The cubic root of 1125646540 is about 1040.2411115032.

The spelling of 1125646540 in words is "one billion, one hundred twenty-five million, six hundred forty-six thousand, five hundred forty".