1115513525 has 48 divisors (see below), whose sum is σ = 1648715904. Its totient is φ = 732775680.

The previous prime is 1115513489. The next prime is 1115513543. The reversal of 1115513525 is 5253155111.

It is not a de Polignac number, because 1115513525 - 2¹⁶ = 1115447989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 397427 + ... + 400223.

It is an arithmetic number, because the mean of its divisors is an integer number (34348248).

Almost surely, 2^1115513525 is an apocalyptic number.

It is an amenable number.

1115513525 is a deficient number, since it is larger than the sum of its proper divisors (533202379).

1115513525 is a wasteful number, since it uses less digits than its factorization.

1115513525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910 (or 2905 counting only the distinct ones).

The product of its digits is 3750, while the sum is 29.

The square root of 1115513525 is about 33399.3042592207. The cubic root of 1115513525 is about 1037.1102983104.

Adding to 1115513525 its reverse (5253155111), we get a palindrome (6368668636).

The spelling of 1115513525 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, five hundred twenty-five".