25701355679 has 2 divisors, whose sum is σ = 25701355680. Its totient is φ = 25701355678.

The previous prime is 25701355663. The next prime is 25701355709. The reversal of 25701355679 is 97655310752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25701355679 - 2⁴ = 25701355663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25701355649) 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, 12850677839 + 12850677840.

It is an arithmetic number, because the mean of its divisors is an integer number (12850677840).

Almost surely, 2^25701355679 is an apocalyptic number.

25701355679 is a deficient number, since it is larger than the sum of its proper divisors (1).

25701355679 is an equidigital number, since it uses as much as digits as its factorization.

25701355679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1984500, while the sum is 50.

The spelling of 25701355679 in words is "twenty-five billion, seven hundred one million, three hundred fifty-five thousand, six hundred seventy-nine".