25191401063471 has 2 divisors, whose sum is σ = 25191401063472. Its totient is φ = 25191401063470.

The previous prime is 25191401063441. The next prime is 25191401063527. The reversal of 25191401063471 is 17436010419152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25191401063471 - 2²⁶ = 25191333954607 is a prime.

It is a super-3 number, since 3×25191401063471³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25191401063401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12595700531735 + 12595700531736.

It is an arithmetic number, because the mean of its divisors is an integer number (12595700531736).

Almost surely, 2^{25191401063471} is an apocalyptic number.

25191401063471 is a deficient number, since it is larger than the sum of its proper divisors (1).

25191401063471 is an equidigital number, since it uses as much as digits as its factorization.

25191401063471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 25191401063471 in words is "twenty-five trillion, one hundred ninety-one billion, four hundred one million, sixty-three thousand, four hundred seventy-one".