1125814447 has 4 divisors (see below), whose sum is σ = 1125883656. Its totient is φ = 1125745240.

The previous prime is 1125814421. The next prime is 1125814451. The reversal of 1125814447 is 7444185211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125814447 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 (1125812447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608 + ... + 47674.

It is an arithmetic number, because the mean of its divisors is an integer number (281470914).

Almost surely, 2^1125814447 is an apocalyptic number.

1125814447 is a deficient number, since it is larger than the sum of its proper divisors (69209).

1125814447 is an equidigital number, since it uses as much as digits as its factorization.

1125814447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69208.

The product of its digits is 35840, while the sum is 37.

The square root of 1125814447 is about 33553.1585249437. The cubic root of 1125814447 is about 1040.2928314331.

Adding to 1125814447 its reverse (7444185211), we get a palindrome (8569999658).

The spelling of 1125814447 in words is "one billion, one hundred twenty-five million, eight hundred fourteen thousand, four hundred forty-seven".