1125001125126 has 16 divisors (see below), whose sum is σ = 2500002500400. Its totient is φ = 375000375024.

The previous prime is 1125001125113. The next prime is 1125001125137. The reversal of 1125001125126 is 6215211005211.

It is a happy number.

1125001125126 is a `hidden beast` number, since 1 + 1 + 2 + 500 + 11 + 25 + 126 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125001125126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10416677031 + ... + 10416677138.

It is an arithmetic number, because the mean of its divisors is an integer number (156250156275).

Almost surely, 2^{1125001125126} is an apocalyptic number.

1125001125126 is an abundant number, since it is smaller than the sum of its proper divisors (1375001375274).

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

1125001125126 is a wasteful number, since it uses less digits than its factorization.

1125001125126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20833354180 (or 20833354174 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 1125001125126 in words is "one trillion, one hundred twenty-five billion, one million, one hundred twenty-five thousand, one hundred twenty-six".