25632591272609 has 2 divisors, whose sum is σ = 25632591272610. Its totient is φ = 25632591272608.

The previous prime is 25632591272543. The next prime is 25632591272611. The reversal of 25632591272609 is 90627219523652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17953041832609 + 7679549440000 = 4237103^2 + 2771200^2 .

It is a cyclic number.

It is not a de Polignac number, because 25632591272609 - 2¹² = 25632591268513 is a prime.

Together with 25632591272611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25632591272689) 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 as a sum of consecutive naturals, namely, 12816295636304 + 12816295636305.

It is an arithmetic number, because the mean of its divisors is an integer number (12816295636305).

Almost surely, 2^{25632591272609} is an apocalyptic number.

It is an amenable number.

25632591272609 is a deficient number, since it is larger than the sum of its proper divisors (1).

25632591272609 is an equidigital number, since it uses as much as digits as its factorization.

25632591272609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24494400, while the sum is 59.

The spelling of 25632591272609 in words is "twenty-five trillion, six hundred thirty-two billion, five hundred ninety-one million, two hundred seventy-two thousand, six hundred nine".