25463488717 has 4 divisors (see below), whose sum is σ = 25475274076. Its totient is φ = 25451703360.

The previous prime is 25463488667. The next prime is 25463488769. The reversal of 25463488717 is 71788436452.

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 21271055716 + 4192433001 = 145846^2 + 64749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25463488717 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 (25463489717) 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, 5889438 + ... + 5893759.

It is an arithmetic number, because the mean of its divisors is an integer number (6368818519).

Almost surely, 2^25463488717 is an apocalyptic number.

It is an amenable number.

25463488717 is a deficient number, since it is larger than the sum of its proper divisors (11785359).

25463488717 is a wasteful number, since it uses less digits than its factorization.

25463488717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11785358.

The product of its digits is 9031680, while the sum is 55.

The spelling of 25463488717 in words is "twenty-five billion, four hundred sixty-three million, four hundred eighty-eight thousand, seven hundred seventeen".