25604670677 has 2 divisors, whose sum is σ = 25604670678. Its totient is φ = 25604670676.

The previous prime is 25604670667. The next prime is 25604670697. The reversal of 25604670677 is 77607640652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24358157041 + 1246513636 = 156071^2 + 35306^2 .

It is a cyclic number.

It is not a de Polignac number, because 25604670677 - 2⁶ = 25604670613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25604670667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12802335338 + 12802335339.

It is an arithmetic number, because the mean of its divisors is an integer number (12802335339).

Almost surely, 2^25604670677 is an apocalyptic number.

It is an amenable number.

25604670677 is a deficient number, since it is larger than the sum of its proper divisors (1).

25604670677 is an equidigital number, since it uses as much as digits as its factorization.

25604670677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 25604670677 in words is "twenty-five billion, six hundred four million, six hundred seventy thousand, six hundred seventy-seven".