1115525213 has 16 divisors (see below), whose sum is σ = 1263928320. Its totient is φ = 975687600.

The previous prime is 1115525209. The next prime is 1115525273. The reversal of 1115525213 is 3125255111.

It is a cyclic number.

It is not a de Polignac number, because 1115525213 - 2² = 1115525209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115525273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12218 + ... + 48788.

It is an arithmetic number, because the mean of its divisors is an integer number (78995520).

Almost surely, 2^1115525213 is an apocalyptic number.

It is an amenable number.

1115525213 is a deficient number, since it is larger than the sum of its proper divisors (148403107).

1115525213 is a wasteful number, since it uses less digits than its factorization.

1115525213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36688.

The product of its digits is 1500, while the sum is 26.

The square root of 1115525213 is about 33399.4792324671. The cubic root of 1115525213 is about 1037.1139204696.

The spelling of 1115525213 in words is "one billion, one hundred fifteen million, five hundred twenty-five thousand, two hundred thirteen".