25760887813 has 4 divisors (see below), whose sum is σ = 25761212460. Its totient is φ = 25760563168.

The previous prime is 25760887793. The next prime is 25760887829. The reversal of 25760887813 is 31878806752.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4717903969 + 21042983844 = 68687^2 + 145062^2 .

It is a cyclic number.

It is not a de Polignac number, because 25760887813 - 2¹³ = 25760879621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25760887843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44793 + ... + 231361.

It is an arithmetic number, because the mean of its divisors is an integer number (6440303115).

Almost surely, 2^25760887813 is an apocalyptic number.

It is an amenable number.

25760887813 is a deficient number, since it is larger than the sum of its proper divisors (324647).

25760887813 is a wasteful number, since it uses less digits than its factorization.

25760887813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324646.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 25760887813 in words is "twenty-five billion, seven hundred sixty million, eight hundred eighty-seven thousand, eight hundred thirteen".