25313646265 has 8 divisors (see below), whose sum is σ = 30419712648. Its totient is φ = 20222025600.

The previous prime is 25313646263. The next prime is 25313646299. The reversal of 25313646265 is 56264631352.

It can be written as a sum of positive squares in 4 ways, for example, as 10040641209 + 15273005056 = 100203^2 + 123584^2 .

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

It is not a de Polignac number, because 25313646265 - 2¹ = 25313646263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25313646263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3607572 + ... + 3614581.

It is an arithmetic number, because the mean of its divisors is an integer number (3802464081).

Almost surely, 2^25313646265 is an apocalyptic number.

It is an amenable number.

25313646265 is a deficient number, since it is larger than the sum of its proper divisors (5106066383).

25313646265 is an equidigital number, since it uses as much as digits as its factorization.

25313646265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222859.

The product of its digits is 777600, while the sum is 43.

The spelling of 25313646265 in words is "twenty-five billion, three hundred thirteen million, six hundred forty-six thousand, two hundred sixty-five".