1125907812 has 36 divisors (see below), whose sum is σ = 2858493820. Its totient is φ = 373660992.

The previous prime is 1125907801. The next prime is 1125907823. The reversal of 1125907812 is 2187095211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1125907801) and next prime (1125907823).

It can be written as a sum of positive squares in 2 ways, for example, as 606341376 + 519566436 = 24624^2 + 22794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1125907812² = 2535336802245254688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60043 + ... + 76530.

Almost surely, 2^1125907812 is an apocalyptic number.

1125907812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125907812 is an abundant number, since it is smaller than the sum of its proper divisors (1732586008).

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

1125907812 is a wasteful number, since it uses less digits than its factorization.

1125907812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136812 (or 136807 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1125907812 is about 33554.5497958176. The cubic root of 1125907812 is about 1040.3215881717.

The spelling of 1125907812 in words is "one billion, one hundred twenty-five million, nine hundred seven thousand, eight hundred twelve".