25795481945 has 4 divisors (see below), whose sum is σ = 30954578340. Its totient is φ = 20636385552.

The previous prime is 25795481923. The next prime is 25795481953. The reversal of 25795481945 is 54918459752.

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 5912225881 + 19883256064 = 76891^2 + 141008^2 .

It is a cyclic number.

It is not a de Polignac number, because 25795481945 - 2³² = 21500514649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579548190 + ... + 2579548199.

It is an arithmetic number, because the mean of its divisors is an integer number (7738644585).

Almost surely, 2^25795481945 is an apocalyptic number.

It is an amenable number.

25795481945 is a deficient number, since it is larger than the sum of its proper divisors (5159096395).

25795481945 is an equidigital number, since it uses as much as digits as its factorization.

25795481945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159096394.

The product of its digits is 18144000, while the sum is 59.

The spelling of 25795481945 in words is "twenty-five billion, seven hundred ninety-five million, four hundred eighty-one thousand, nine hundred forty-five".