108661925 has 12 divisors (see below), whose sum is σ = 137284740. Its totient is φ = 85288320.

The previous prime is 108661919. The next prime is 108661937. The reversal of 108661925 is 529166801.

It can be written as a sum of positive squares in 6 ways, for example, as 7579009 + 101082916 = 2753^2 + 10054^2 .

It is not a de Polignac number, because 108661925 - 2⁸ = 108661669 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39680 + ... + 42329.

It is an arithmetic number, because the mean of its divisors is an integer number (11440395).

Almost surely, 2^108661925 is an apocalyptic number.

It is an amenable number.

108661925 is a deficient number, since it is larger than the sum of its proper divisors (28622815).

108661925 is an equidigital number, since it uses as much as digits as its factorization.

108661925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82072 (or 82067 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 108661925 is about 10424.1030789224. The cubic root of 108661925 is about 477.1912425171.

The spelling of 108661925 in words is "one hundred eight million, six hundred sixty-one thousand, nine hundred twenty-five".