25051717 has 2 divisors, whose sum is σ = 25051718. Its totient is φ = 25051716.

The previous prime is 25051703. The next prime is 25051723. The reversal of 25051717 is 71715052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 6380676 = 4321^2 + 2526^2 .

It is a cyclic number.

It is not a de Polignac number, because 25051717 - 2¹¹ = 25049669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25051777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12525858 + 12525859.

It is an arithmetic number, because the mean of its divisors is an integer number (12525859).

Almost surely, 2^25051717 is an apocalyptic number.

It is an amenable number.

25051717 is a deficient number, since it is larger than the sum of its proper divisors (1).

25051717 is an equidigital number, since it uses as much as digits as its factorization.

25051717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 25051717 is about 5005.1690281148. The cubic root of 25051717 is about 292.6032635130.

Adding to 25051717 its reverse (71715052), we get a palindrome (96766769).

The spelling of 25051717 in words is "twenty-five million, fifty-one thousand, seven hundred seventeen".