1125232013 has 4 divisors (see below), whose sum is σ = 1174155168. Its totient is φ = 1076308860.

The previous prime is 1125231979. The next prime is 1125232019. The reversal of 1125232013 is 3102325211.

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 1125232013 - 2¹⁰ = 1125230989 is a prime.

It is a super-2 number, since 2×1125232013² = 2532294166160064338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125232019) 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, 24461543 + ... + 24461588.

It is an arithmetic number, because the mean of its divisors is an integer number (293538792).

Almost surely, 2^1125232013 is an apocalyptic number.

It is an amenable number.

1125232013 is a deficient number, since it is larger than the sum of its proper divisors (48923155).

1125232013 is an equidigital number, since it uses as much as digits as its factorization.

1125232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48923154.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1125232013 is about 33544.4781297906. The cubic root of 1125232013 is about 1040.1134038690.

Adding to 1125232013 its reverse (3102325211), we get a palindrome (4227557224).

The spelling of 1125232013 in words is "one billion, one hundred twenty-five million, two hundred thirty-two thousand, thirteen".