25403317 has 2 divisors, whose sum is σ = 25403318. Its totient is φ = 25403316.

The previous prime is 25403311. The next prime is 25403327. The reversal of 25403317 is 71330452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14814801 + 10588516 = 3849^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 25403317 - 2³ = 25403309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25403291 and 25403300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25403311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701658 + 12701659.

It is an arithmetic number, because the mean of its divisors is an integer number (12701659).

Almost surely, 2^25403317 is an apocalyptic number.

It is an amenable number.

25403317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403317 is an equidigital number, since it uses as much as digits as its factorization.

25403317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 25403317 is about 5040.1703344232. The cubic root of 25403317 is about 293.9658011650.

Adding to 25403317 its reverse (71330452), we get a palindrome (96733769).

The spelling of 25403317 in words is "twenty-five million, four hundred three thousand, three hundred seventeen".