1117889525 has 12 divisors (see below), whose sum is σ = 1388628384. Its totient is φ = 892734000.

The previous prime is 1117889471. The next prime is 1117889527. The reversal of 1117889525 is 5259887111.

It is not a de Polignac number, because 1117889525 - 2¹² = 1117885429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1117889525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117889527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24881 + ... + 53430.

It is an arithmetic number, because the mean of its divisors is an integer number (115719032).

Almost surely, 2^1117889525 is an apocalyptic number.

It is an amenable number.

1117889525 is a deficient number, since it is larger than the sum of its proper divisors (270738859).

1117889525 is an equidigital number, since it uses as much as digits as its factorization.

1117889525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78892 (or 78887 counting only the distinct ones).

The product of its digits is 201600, while the sum is 47.

The square root of 1117889525 is about 33434.8549421109. The cubic root of 1117889525 is about 1037.8461108755.

The spelling of 1117889525 in words is "one billion, one hundred seventeen million, eight hundred eighty-nine thousand, five hundred twenty-five".