1125505018 has 8 divisors (see below), whose sum is σ = 1841735520. Its totient is φ = 511593180.

The previous prime is 1125504997. The next prime is 1125505019. The reversal of 1125505018 is 8105055211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1125505019) 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, 25579638 + ... + 25579681.

It is an arithmetic number, because the mean of its divisors is an integer number (230216940).

Almost surely, 2^1125505018 is an apocalyptic number.

1125505018 is a deficient number, since it is larger than the sum of its proper divisors (716230502).

1125505018 is a wasteful number, since it uses less digits than its factorization.

1125505018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51159332.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 1125505018 is about 33548.5471816590. The cubic root of 1125505018 is about 1040.1975148775.

The spelling of 1125505018 in words is "one billion, one hundred twenty-five million, five hundred five thousand, eighteen".