25642735463 has 2 divisors, whose sum is σ = 25642735464. Its totient is φ = 25642735462.

The previous prime is 25642735379. The next prime is 25642735487. The reversal of 25642735463 is 36453724652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25642735463 - 2⁸ = 25642735207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25642734463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12821367731 + 12821367732.

It is an arithmetic number, because the mean of its divisors is an integer number (12821367732).

Almost surely, 2^25642735463 is an apocalyptic number.

25642735463 is a deficient number, since it is larger than the sum of its proper divisors (1).

25642735463 is an equidigital number, since it uses as much as digits as its factorization.

25642735463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 47.

The spelling of 25642735463 in words is "twenty-five billion, six hundred forty-two million, seven hundred thirty-five thousand, four hundred sixty-three".