1125435503 has 4 divisors (see below), whose sum is σ = 1132604040. Its totient is φ = 1118266968.

The previous prime is 1125435499. The next prime is 1125435529. The reversal of 1125435503 is 3055345211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3055345211 = 1571 ⋅1944841.

It is a cyclic number.

It is not a de Polignac number, because 1125435503 - 2² = 1125435499 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 (1125435533) 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, 3584033 + ... + 3584346.

It is an arithmetic number, because the mean of its divisors is an integer number (283151010).

Almost surely, 2^1125435503 is an apocalyptic number.

1125435503 is a deficient number, since it is larger than the sum of its proper divisors (7168537).

1125435503 is an equidigital number, since it uses as much as digits as its factorization.

1125435503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7168536.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1125435503 is about 33547.5111297396. The cubic root of 1125435503 is about 1040.1760990633.

The spelling of 1125435503 in words is "one billion, one hundred twenty-five million, four hundred thirty-five thousand, five hundred three".