1115520125 has 32 divisors (see below), whose sum is σ = 1457374464. Its totient is φ = 850872000.

The previous prime is 1115520113. The next prime is 1115520149. The reversal of 1115520125 is 5210255111.

It is not a de Polignac number, because 1115520125 - 2¹⁰ = 1115519101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 1115520125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1687295 + ... + 1687955.

It is an arithmetic number, because the mean of its divisors is an integer number (45542952).

Almost surely, 2^1115520125 is an apocalyptic number.

It is an amenable number.

1115520125 is a deficient number, since it is larger than the sum of its proper divisors (341854339).

1115520125 is an equidigital number, since it uses as much as digits as its factorization.

1115520125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1115520125 is about 33399.4030635279. The cubic root of 1115520125 is about 1037.1123436806.

Adding to 1115520125 its reverse (5210255111), we get a palindrome (6325775236).

The spelling of 1115520125 in words is "one billion, one hundred fifteen million, five hundred twenty thousand, one hundred twenty-five".