1125078487 has 4 divisors (see below), whose sum is σ = 1211623000. Its totient is φ = 1038533976.

The previous prime is 1125078473. The next prime is 1125078509. The reversal of 1125078487 is 7848705211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7848705211 = 89 ⋅88187699.

It is a cyclic number.

It is not a de Polignac number, because 1125078487 - 2²³ = 1116689879 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 (1125078467) 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 3 ways as a sum of consecutive naturals, for example, 43272237 + ... + 43272262.

It is an arithmetic number, because the mean of its divisors is an integer number (302905750).

Almost surely, 2^1125078487 is an apocalyptic number.

1125078487 is a deficient number, since it is larger than the sum of its proper divisors (86544513).

1125078487 is an equidigital number, since it uses as much as digits as its factorization.

1125078487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86544512.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 1125078487 is about 33542.1896572063. The cubic root of 1125078487 is about 1040.0660975619.

The spelling of 1125078487 in words is "one billion, one hundred twenty-five million, seventy-eight thousand, four hundred eighty-seven".