1125724812 has 12 divisors (see below), whose sum is σ = 2626691256. Its totient is φ = 375241600.

The previous prime is 1125724807. The next prime is 1125724837. The reversal of 1125724812 is 2184275211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46905189 + ... + 46905212.

It is an arithmetic number, because the mean of its divisors is an integer number (218890938).

Almost surely, 2^1125724812 is an apocalyptic number.

1125724812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125724812 is an abundant number, since it is smaller than the sum of its proper divisors (1500966444).

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

1125724812 is a wasteful number, since it uses less digits than its factorization.

1125724812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93810408 (or 93810406 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 1125724812 is about 33551.8227820785. The cubic root of 1125724812 is about 1040.2652220513.

The spelling of 1125724812 in words is "one billion, one hundred twenty-five million, seven hundred twenty-four thousand, eight hundred twelve".