115821125 has 16 divisors (see below), whose sum is σ = 165195264. Its totient is φ = 79419600.

The previous prime is 115821107. The next prime is 115821133. The reversal of 115821125 is 521128511.

It is not a de Polignac number, because 115821125 - 2²⁰ = 114772549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115821094 and 115821103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65309 + ... + 67058.

It is an arithmetic number, because the mean of its divisors is an integer number (10324704).

Almost surely, 2^115821125 is an apocalyptic number.

It is an amenable number.

115821125 is a deficient number, since it is larger than the sum of its proper divisors (49374139).

115821125 is an equidigital number, since it uses as much as digits as its factorization.

115821125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132389 (or 132379 counting only the distinct ones).

The product of its digits is 800, while the sum is 26.

The square root of 115821125 is about 10762.0223471242. The cubic root of 115821125 is about 487.4490851932.

Adding to 115821125 its reverse (521128511), we get a palindrome (636949636).

The spelling of 115821125 in words is "one hundred fifteen million, eight hundred twenty-one thousand, one hundred twenty-five".