1125041217 has 4 divisors (see below), whose sum is σ = 1500054960. Its totient is φ = 750027476.

The previous prime is 1125041213. The next prime is 1125041233. The reversal of 1125041217 is 7121405211.

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 1125041217 - 2² = 1125041213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125041213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187506867 + ... + 187506872.

It is an arithmetic number, because the mean of its divisors is an integer number (375013740).

Almost surely, 2^1125041217 is an apocalyptic number.

It is an amenable number.

1125041217 is a deficient number, since it is larger than the sum of its proper divisors (375013743).

1125041217 is an equidigital number, since it uses as much as digits as its factorization.

1125041217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375013742.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1125041217 is about 33541.6340836281. The cubic root of 1125041217 is about 1040.0546128249.

Adding to 1125041217 its reverse (7121405211), we get a palindrome (8246446428).

The spelling of 1125041217 in words is "one billion, one hundred twenty-five million, forty-one thousand, two hundred seventeen".