25481475071999 has 2 divisors, whose sum is σ = 25481475072000. Its totient is φ = 25481475071998.

The previous prime is 25481475071963. The next prime is 25481475072019. The reversal of 25481475071999 is 99917057418452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25481475071999 - 2³⁶ = 25412755595263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25481475071099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12740737535999 + 12740737536000.

It is an arithmetic number, because the mean of its divisors is an integer number (12740737536000).

Almost surely, 2^{25481475071999} is an apocalyptic number.

25481475071999 is a deficient number, since it is larger than the sum of its proper divisors (1).

25481475071999 is an equidigital number, since it uses as much as digits as its factorization.

25481475071999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 228614400, while the sum is 71.

The spelling of 25481475071999 in words is "twenty-five trillion, four hundred eighty-one billion, four hundred seventy-five million, seventy-one thousand, nine hundred ninety-nine".