1125572138837 has 4 divisors (see below), whose sum is σ = 1125578903136. Its totient is φ = 1125565374540.

The previous prime is 1125572138797. The next prime is 1125572138839. The reversal of 1125572138837 is 7388312755211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125572138837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125572138839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3126089 + ... + 3467502.

It is an arithmetic number, because the mean of its divisors is an integer number (281394725784).

Almost surely, 2^{1125572138837} is an apocalyptic number.

It is an amenable number.

1125572138837 is a deficient number, since it is larger than the sum of its proper divisors (6764299).

1125572138837 is an equidigital number, since it uses as much as digits as its factorization.

1125572138837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764298.

The product of its digits is 2822400, while the sum is 53.

The spelling of 1125572138837 in words is "one trillion, one hundred twenty-five billion, five hundred seventy-two million, one hundred thirty-eight thousand, eight hundred thirty-seven".