25916393 has 2 divisors, whose sum is σ = 25916394. Its totient is φ = 25916392.

The previous prime is 25916383. The next prime is 25916419. The reversal of 25916393 is 39361952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20403289 + 5513104 = 4517^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 25916393 - 2⁶ = 25916329 is a prime.

It is a super-2 number, since 2×25916393² = 1343318852260898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25916383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12958196 + 12958197.

It is an arithmetic number, because the mean of its divisors is an integer number (12958197).

Almost surely, 2^25916393 is an apocalyptic number.

It is an amenable number.

25916393 is a deficient number, since it is larger than the sum of its proper divisors (1).

25916393 is an equidigital number, since it uses as much as digits as its factorization.

25916393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 25916393 is about 5090.8145713628. The cubic root of 25916393 is about 295.9317204635.

The spelling of 25916393 in words is "twenty-five million, nine hundred sixteen thousand, three hundred ninety-three".