25603349 has 2 divisors, whose sum is σ = 25603350. Its totient is φ = 25603348.

The previous prime is 25603321. The next prime is 25603351. The reversal of 25603349 is 94330652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 7879249 = 4210^2 + 2807^2 .

It is a cyclic number.

It is not a de Polignac number, because 25603349 - 2²⁴ = 8826133 is a prime.

Together with 25603351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25603379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801674 + 12801675.

It is an arithmetic number, because the mean of its divisors is an integer number (12801675).

Almost surely, 2^25603349 is an apocalyptic number.

It is an amenable number.

25603349 is a deficient number, since it is larger than the sum of its proper divisors (1).

25603349 is an equidigital number, since it uses as much as digits as its factorization.

25603349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 25603349 is about 5059.9751975677. The cubic root of 25603349 is about 294.7353712282.

It can be divided in two parts, 25603 and 349, that added together give a palindrome (25952).

The spelling of 25603349 in words is "twenty-five million, six hundred three thousand, three hundred forty-nine".