25344316609 has 4 divisors (see below), whose sum is σ = 25822511316. Its totient is φ = 24866121904.

The previous prime is 25344316589. The next prime is 25344316687. The reversal of 25344316609 is 90661344352.

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 13974786225 + 11369530384 = 118215^2 + 106628^2 .

It is a cyclic number.

It is not a de Polignac number, because 25344316609 - 2⁵ = 25344316577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25344316709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 239097274 + ... + 239097379.

It is an arithmetic number, because the mean of its divisors is an integer number (6455627829).

Almost surely, 2^25344316609 is an apocalyptic number.

It is an amenable number.

25344316609 is a deficient number, since it is larger than the sum of its proper divisors (478194707).

25344316609 is an equidigital number, since it uses as much as digits as its factorization.

25344316609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478194706.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 25344316609 in words is "twenty-five billion, three hundred forty-four million, three hundred sixteen thousand, six hundred nine".