25670717 has 2 divisors, whose sum is σ = 25670718. Its totient is φ = 25670716.

The previous prime is 25670693. The next prime is 25670741. The reversal of 25670717 is 71707652.

It is a balanced prime because it is at equal distance from previous prime (25670693) and next prime (25670741).

It can be written as a sum of positive squares in only one way, i.e., 24462916 + 1207801 = 4946^2 + 1099^2 .

It is a cyclic number.

It is not a de Polignac number, because 25670717 - 2¹⁸ = 25408573 is a prime.

It is a super-4 number, since 4×25670717⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25600717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835358 + 12835359.

It is an arithmetic number, because the mean of its divisors is an integer number (12835359).

Almost surely, 2^25670717 is an apocalyptic number.

It is an amenable number.

25670717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670717 is an equidigital number, since it uses as much as digits as its factorization.

25670717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 25670717 is about 5066.6277739735. The cubic root of 25670717 is about 294.9936491978.

The spelling of 25670717 in words is "twenty-five million, six hundred seventy thousand, seven hundred seventeen".