115420225 has 24 divisors (see below), whose sum is σ = 154141920. Its totient is φ = 85413120.

The previous prime is 115420219. The next prime is 115420229. The reversal of 115420225 is 522024511.

It is a de Polignac number, because none of the positive numbers 2^k-115420225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115420196 and 115420205.

It is not an unprimeable number, because it can be changed into a prime (115420229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22774 + ... + 27376.

It is an arithmetic number, because the mean of its divisors is an integer number (6422580).

Almost surely, 2^115420225 is an apocalyptic number.

It is an amenable number.

115420225 is a deficient number, since it is larger than the sum of its proper divisors (38721695).

115420225 is a wasteful number, since it uses less digits than its factorization.

115420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689 (or 4684 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 115420225 is about 10743.3805201156. The cubic root of 115420225 is about 486.8860208280.

Adding to 115420225 its reverse (522024511), we get a palindrome (637444736).

The spelling of 115420225 in words is "one hundred fifteen million, four hundred twenty thousand, two hundred twenty-five".