1125004445 has 4 divisors (see below), whose sum is σ = 1350005340. Its totient is φ = 900003552.

The previous prime is 1125004429. The next prime is 1125004457. The reversal of 1125004445 is 5444005211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 746546329 + 378458116 = 27323^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125004445 - 2⁴ = 1125004429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112500440 + ... + 112500449.

It is an arithmetic number, because the mean of its divisors is an integer number (337501335).

Almost surely, 2^1125004445 is an apocalyptic number.

It is an amenable number.

1125004445 is a deficient number, since it is larger than the sum of its proper divisors (225000895).

1125004445 is an equidigital number, since it uses as much as digits as its factorization.

1125004445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225000894.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1125004445 is about 33541.0859245791. The cubic root of 1125004445 is about 1040.0432812979.

Adding to 1125004445 its reverse (5444005211), we get a palindrome (6569009656).

The spelling of 1125004445 in words is "one billion, one hundred twenty-five million, four thousand, four hundred forty-five".