25324109 has 4 divisors (see below), whose sum is σ = 25455516. Its totient is φ = 25192704.

The previous prime is 25324097. The next prime is 25324111. The reversal of 25324109 is 90142352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18088009 + 7236100 = 4253^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 25324109 - 2⁸ = 25323853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25324129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65414 + ... + 65799.

It is an arithmetic number, because the mean of its divisors is an integer number (6363879).

Almost surely, 2^25324109 is an apocalyptic number.

It is an amenable number.

25324109 is a deficient number, since it is larger than the sum of its proper divisors (131407).

25324109 is a wasteful number, since it uses less digits than its factorization.

25324109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131406.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25324109 is about 5032.3065288196. The cubic root of 25324109 is about 293.6599528431.

The spelling of 25324109 in words is "twenty-five million, three hundred twenty-four thousand, one hundred nine".