1125455617 has 32 divisors (see below), whose sum is σ = 1365194880. Its totient is φ = 914112000.

The previous prime is 1125455609. The next prime is 1125455623. The reversal of 1125455617 is 7165545211.

It is a cyclic number.

It is not a de Polignac number, because 1125455617 - 2³ = 1125455609 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125455627) 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 31 ways as a sum of consecutive naturals, for example, 814267 + ... + 815647.

It is an arithmetic number, because the mean of its divisors is an integer number (42662340).

Almost surely, 2^1125455617 is an apocalyptic number.

It is an amenable number.

1125455617 is a deficient number, since it is larger than the sum of its proper divisors (239739263).

1125455617 is a wasteful number, since it uses less digits than its factorization.

1125455617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its digits is 42000, while the sum is 37.

The square root of 1125455617 is about 33547.8109121892. The cubic root of 1125455617 is about 1040.1822957689.

The spelling of 1125455617 in words is "one billion, one hundred twenty-five million, four hundred fifty-five thousand, six hundred seventeen".