25717416929 has 2 divisors, whose sum is σ = 25717416930. Its totient is φ = 25717416928.

The previous prime is 25717416899. The next prime is 25717416931. The reversal of 25717416929 is 92961471752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24319778704 + 1397638225 = 155948^2 + 37385^2 .

It is a cyclic number.

It is not a de Polignac number, because 25717416929 - 2²⁸ = 25448981473 is a prime.

It is a super-2 number, since 2×25717416929² (a number of 22 digits) contains 22 as substring.

Together with 25717416931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25717419929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12858708464 + 12858708465.

It is an arithmetic number, because the mean of its divisors is an integer number (12858708465).

Almost surely, 2^25717416929 is an apocalyptic number.

It is an amenable number.

25717416929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25717416929 is an equidigital number, since it uses as much as digits as its factorization.

25717416929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The spelling of 25717416929 in words is "twenty-five billion, seven hundred seventeen million, four hundred sixteen thousand, nine hundred twenty-nine".