25695056507 has 2 divisors, whose sum is σ = 25695056508. Its totient is φ = 25695056506.

The previous prime is 25695056503. The next prime is 25695056531. The reversal of 25695056507 is 70565059652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25695056507 - 2² = 25695056503 is a prime.

It is not a weakly prime, because it can be changed into another prime (25695056503) 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, 12847528253 + 12847528254.

It is an arithmetic number, because the mean of its divisors is an integer number (12847528254).

Almost surely, 2^25695056507 is an apocalyptic number.

25695056507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25695056507 is an equidigital number, since it uses as much as digits as its factorization.

25695056507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835000, while the sum is 50.

The spelling of 25695056507 in words is "twenty-five billion, six hundred ninety-five million, fifty-six thousand, five hundred seven".