1115541021525 has 96 divisors (see below), whose sum is σ = 2136549918720. Its totient is φ = 503062859520.

The previous prime is 1115541021467. The next prime is 1115541021541. The reversal of 1115541021525 is 5251201455111.

It is a happy number.

It is not a de Polignac number, because 1115541021525 - 2²⁰ = 1115539972949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11408392 + ... + 11505758.

It is an arithmetic number, because the mean of its divisors is an integer number (22255728320).

Almost surely, 2^{1115541021525} is an apocalyptic number.

1115541021525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1115541021525 is a deficient number, since it is larger than the sum of its proper divisors (1021008897195).

1115541021525 is a wasteful number, since it uses less digits than its factorization.

1115541021525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97683 (or 97678 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 33.

Adding to 1115541021525 its reverse (5251201455111), we get a palindrome (6366742476636).

The spelling of 1115541021525 in words is "one trillion, one hundred fifteen billion, five hundred forty-one million, twenty-one thousand, five hundred twenty-five".