109025 has 18 divisors (see below), whose sum is σ = 159030. Its totient is φ = 73920.

The previous prime is 109013. The next prime is 109037. The reversal of 109025 is 520901.

109025 = 21² + 22² + ... + 69².

It is an interprime number because it is at equal distance from previous prime (109013) and next prime (109037).

It can be written as a sum of positive squares in 3 ways, for example, as 784 + 108241 = 28^2 + 329^2 .

It is not a de Polignac number, because 109025 - 2⁶ = 108961 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 108994 and 109012.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1181 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (8835).

2¹⁰⁹⁰²⁵ is an apocalyptic number.

It is an amenable number.

109025 is a deficient number, since it is larger than the sum of its proper divisors (50005).

109025 is an equidigital number, since it uses as much as digits as its factorization.

109025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 109025 is about 330.1893396220. The cubic root of 109025 is about 47.7722135619.

Adding to 109025 its reverse (520901), we get a palindrome (629926).

The spelling of 109025 in words is "one hundred nine thousand, twenty-five".