109709825 has 6 divisors (see below), whose sum is σ = 136040214. Its totient is φ = 87767840.

The previous prime is 109709807. The next prime is 109709861. The reversal of 109709825 is 528907901.

It can be written as a sum of positive squares in 3 ways, for example, as 35129329 + 74580496 = 5927^2 + 8636^2 .

It is not a de Polignac number, because 109709825 - 2⁸ = 109709569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2194172 + ... + 2194221.

It is an arithmetic number, because the mean of its divisors is an integer number (22673369).

Almost surely, 2^109709825 is an apocalyptic number.

It is an amenable number.

109709825 is a deficient number, since it is larger than the sum of its proper divisors (26330389).

109709825 is an equidigital number, since it uses as much as digits as its factorization.

109709825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388403 (or 4388398 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 109709825 is about 10474.2457962376. The cubic root of 109709825 is about 478.7202964299.

The spelling of 109709825 in words is "one hundred nine million, seven hundred nine thousand, eight hundred twenty-five".