1125644584861 has 4 divisors (see below), whose sum is σ = 1174585653792. Its totient is φ = 1076703515932.

The previous prime is 1125644584817. The next prime is 1125644584901. The reversal of 1125644584861 is 1684854465211.

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 not a de Polignac number, because 1125644584861 - 2⁷ = 1125644584733 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 (1125644584061) 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, 24470534431 + ... + 24470534476.

It is an arithmetic number, because the mean of its divisors is an integer number (293646413448).

Almost surely, 2^{1125644584861} is an apocalyptic number.

It is an amenable number.

1125644584861 is a deficient number, since it is larger than the sum of its proper divisors (48941068931).

1125644584861 is an equidigital number, since it uses as much as digits as its factorization.

1125644584861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48941068930.

The product of its digits is 7372800, while the sum is 55.

The spelling of 1125644584861 in words is "one trillion, one hundred twenty-five billion, six hundred forty-four million, five hundred eighty-four thousand, eight hundred sixty-one".