117815225 has 24 divisors (see below), whose sum is σ = 160087968. Its totient is φ = 85299200.

The previous prime is 117815213. The next prime is 117815231. The reversal of 117815225 is 522518711.

It is not a de Polignac number, because 117815225 - 2⁶ = 117815161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117815191 and 117815200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69842 + ... + 71508.

It is an arithmetic number, because the mean of its divisors is an integer number (6670332).

Almost surely, 2^117815225 is an apocalyptic number.

It is an amenable number.

117815225 is a deficient number, since it is larger than the sum of its proper divisors (42272743).

117815225 is a wasteful number, since it uses less digits than its factorization.

117815225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945 (or 1940 counting only the distinct ones).

The product of its digits is 5600, while the sum is 32.

The square root of 117815225 is about 10854.2722003827. The cubic root of 117815225 is about 490.2306633008.

The spelling of 117815225 in words is "one hundred seventeen million, eight hundred fifteen thousand, two hundred twenty-five".