1125904605 has 24 divisors (see below), whose sum is σ = 2095562592. Its totient is φ = 514698912.

The previous prime is 1125904597. The next prime is 1125904609. The reversal of 1125904605 is 5064095211.

It is not a de Polignac number, because 1125904605 - 2³ = 1125904597 is a prime.

It is a super-2 number, since 2×1125904605² = 2535322359120412050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125904609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765187 + ... + 766656.

It is an arithmetic number, because the mean of its divisors is an integer number (87315108).

Almost surely, 2^1125904605 is an apocalyptic number.

1125904605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125904605 is a deficient number, since it is larger than the sum of its proper divisors (969657987).

1125904605 is a wasteful number, since it uses less digits than its factorization.

1125904605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531865 (or 1531858 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1125904605 is about 33554.5020079273. The cubic root of 1125904605 is about 1040.3206004311.

Adding to 1125904605 its reverse (5064095211), we get a palindrome (6189999816).

The spelling of 1125904605 in words is "one billion, one hundred twenty-five million, nine hundred four thousand, six hundred five".