25309807745 has 8 divisors (see below), whose sum is σ = 30553637184. Its totient is φ = 20126600944.

The previous prime is 25309807667. The next prime is 25309807751. The reversal of 25309807745 is 54770890352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25309807745 - 2²⁸ = 25041372289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25309807693 and 25309807702.

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 7 ways as a sum of consecutive naturals, for example, 15154739 + ... + 15156408.

It is an arithmetic number, because the mean of its divisors is an integer number (3819204648).

Almost surely, 2^25309807745 is an apocalyptic number.

It is an amenable number.

25309807745 is a deficient number, since it is larger than the sum of its proper divisors (5243829439).

25309807745 is a wasteful number, since it uses less digits than its factorization.

25309807745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30311319.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 25309807745 in words is "twenty-five billion, three hundred nine million, eight hundred seven thousand, seven hundred forty-five".