25445364313 has 4 divisors (see below), whose sum is σ = 26133076900. Its totient is φ = 24757651728.

The previous prime is 25445364257. The next prime is 25445364331. The reversal of 25445364313 is 31346354452.

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 19324336144 + 6121028169 = 139012^2 + 78237^2 .

It is a cyclic number.

It is not a de Polignac number, because 25445364313 - 2¹⁷ = 25445233241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25445364383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343856238 + ... + 343856311.

It is an arithmetic number, because the mean of its divisors is an integer number (6533269225).

Almost surely, 2^25445364313 is an apocalyptic number.

It is an amenable number.

25445364313 is a deficient number, since it is larger than the sum of its proper divisors (687712587).

25445364313 is an equidigital number, since it uses as much as digits as its factorization.

25445364313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687712586.

The product of its digits is 518400, while the sum is 40.

The spelling of 25445364313 in words is "twenty-five billion, four hundred forty-five million, three hundred sixty-four thousand, three hundred thirteen".