25917193 has 2 divisors, whose sum is σ = 25917194. Its totient is φ = 25917192.

The previous prime is 25917179. The next prime is 25917223. The reversal of 25917193 is 39171952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 4359744 = 4643^2 + 2088^2 .

It is a cyclic number.

It is not a de Polignac number, because 25917193 - 2¹³ = 25909001 is a prime.

It is not a weakly prime, because it can be changed into another prime (25917893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12958596 + 12958597.

It is an arithmetic number, because the mean of its divisors is an integer number (12958597).

Almost surely, 2^25917193 is an apocalyptic number.

It is an amenable number.

25917193 is a deficient number, since it is larger than the sum of its proper divisors (1).

25917193 is an equidigital number, since it uses as much as digits as its factorization.

25917193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 25917193 is about 5090.8931436439. The cubic root of 25917193 is about 295.9347654209.

It can be divided in two parts, 2 and 5917193, that added together give a palindrome (5917195).

The spelling of 25917193 in words is "twenty-five million, nine hundred seventeen thousand, one hundred ninety-three".