1115210525 has 48 divisors (see below), whose sum is σ = 1668726528. Its totient is φ = 728352000.

The previous prime is 1115210521. The next prime is 1115210533. The reversal of 1115210525 is 5250125111.

It is not a de Polignac number, because 1115210525 - 2² = 1115210521 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 1115210525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115210521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128060 + ... + 136490.

It is an arithmetic number, because the mean of its divisors is an integer number (34765136).

Almost surely, 2^1115210525 is an apocalyptic number.

It is an amenable number.

1115210525 is a deficient number, since it is larger than the sum of its proper divisors (553516003).

1115210525 is a wasteful number, since it uses less digits than its factorization.

1115210525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502 (or 8497 counting only the distinct ones).

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

The square root of 1115210525 is about 33394.7679285244. The cubic root of 1115210525 is about 1037.0163885341.

Adding to 1115210525 its reverse (5250125111), we get a palindrome (6365335636).

The spelling of 1115210525 in words is "one billion, one hundred fifteen million, two hundred ten thousand, five hundred twenty-five".