1125188487 has 24 divisors (see below), whose sum is σ = 1683224400. Its totient is φ = 723437568.

The previous prime is 1125188479. The next prime is 1125188501. The reversal of 1125188487 is 7848815211.

1125188487 is a `hidden beast` number, since 112 + 51 + 8 + 8 + 487 = 666.

It is not a de Polignac number, because 1125188487 - 2³ = 1125188479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125188437) 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 23 ways as a sum of consecutive naturals, for example, 299064 + ... + 302802.

It is an arithmetic number, because the mean of its divisors is an integer number (70134350).

Almost surely, 2^1125188487 is an apocalyptic number.

1125188487 is a deficient number, since it is larger than the sum of its proper divisors (558035913).

1125188487 is a wasteful number, since it uses less digits than its factorization.

1125188487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4927 (or 4924 counting only the distinct ones).

The product of its digits is 143360, while the sum is 45.

The square root of 1125188487 is about 33543.8293431147. The cubic root of 1125188487 is about 1040.0999925430.

The spelling of 1125188487 in words is "one billion, one hundred twenty-five million, one hundred eighty-eight thousand, four hundred eighty-seven".