25471717 has 2 divisors, whose sum is σ = 25471718. Its totient is φ = 25471716.

The previous prime is 25471703. The next prime is 25471751. The reversal of 25471717 is 71717452.

It is an a-pointer prime, because the next prime (25471751) can be obtained adding 25471717 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20061441 + 5410276 = 4479^2 + 2326^2 .

It is a cyclic number.

It is not a de Polignac number, because 25471717 - 2¹¹ = 25469669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25471757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12735858 + 12735859.

It is an arithmetic number, because the mean of its divisors is an integer number (12735859).

Almost surely, 2^25471717 is an apocalyptic number.

It is an amenable number.

25471717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25471717 is an equidigital number, since it uses as much as digits as its factorization.

25471717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13720, while the sum is 34.

The square root of 25471717 is about 5046.9512579378. The cubic root of 25471717 is about 294.2294050750.

The spelling of 25471717 in words is "twenty-five million, four hundred seventy-one thousand, seven hundred seventeen".