108961225 has 6 divisors (see below), whose sum is σ = 135111950. Its totient is φ = 87168960.

The previous prime is 108961201. The next prime is 108961243. The reversal of 108961225 is 522169801.

It can be written as a sum of positive squares in 3 ways, for example, as 22024249 + 86936976 = 4693^2 + 9324^2 .

It is a de Polignac number, because none of the positive numbers 2^k-108961225 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2179200 + ... + 2179249.

Almost surely, 2^108961225 is an apocalyptic number.

It is an amenable number.

108961225 is a deficient number, since it is larger than the sum of its proper divisors (26150725).

108961225 is an equidigital number, since it uses as much as digits as its factorization.

108961225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358459 (or 4358454 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 108961225 is about 10438.4493580225. The cubic root of 108961225 is about 477.6289683891.

It can be divided in two parts, 10896 and 1225, that added together give a palindrome (12121).

The spelling of 108961225 in words is "one hundred eight million, nine hundred sixty-one thousand, two hundred twenty-five".