1125520133 has 4 divisors (see below), whose sum is σ = 1125946080. Its totient is φ = 1125094188.

The previous prime is 1125520103. The next prime is 1125520159. The reversal of 1125520133 is 3310255211.

It is a happy number.

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 1125520133 - 2⁸ = 1125519877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125520099 and 1125520108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125520103) 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, 208985 + ... + 214302.

It is an arithmetic number, because the mean of its divisors is an integer number (281486520).

Almost surely, 2^1125520133 is an apocalyptic number.

It is an amenable number.

1125520133 is a deficient number, since it is larger than the sum of its proper divisors (425947).

1125520133 is an equidigital number, since it uses as much as digits as its factorization.

1125520133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425946.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1125520133 is about 33548.7724514624. The cubic root of 1125520133 is about 1040.2021713102.

Adding to 1125520133 its reverse (3310255211), we get a palindrome (4435775344).

The spelling of 1125520133 in words is "one billion, one hundred twenty-five million, five hundred twenty thousand, one hundred thirty-three".