25471909471 has 2 divisors, whose sum is σ = 25471909472. Its totient is φ = 25471909470.

The previous prime is 25471909391. The next prime is 25471909493. The reversal of 25471909471 is 17490917452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25471909471 is a prime.

It is a super-3 number, since 3×25471909471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25471909571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12735954735 + 12735954736.

It is an arithmetic number, because the mean of its divisors is an integer number (12735954736).

Almost surely, 2^25471909471 is an apocalyptic number.

25471909471 is a deficient number, since it is larger than the sum of its proper divisors (1).

25471909471 is an equidigital number, since it uses as much as digits as its factorization.

25471909471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 25471909471 in words is "twenty-five billion, four hundred seventy-one million, nine hundred nine thousand, four hundred seventy-one".