25403297 has 2 divisors, whose sum is σ = 25403298. Its totient is φ = 25403296.

The previous prime is 25403281. The next prime is 25403299. The reversal of 25403297 is 79230452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24690961 + 712336 = 4969^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 25403297 - 2⁴ = 25403281 is a prime.

Together with 25403299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25403299) 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, 12701648 + 12701649.

It is an arithmetic number, because the mean of its divisors is an integer number (12701649).

Almost surely, 2^25403297 is an apocalyptic number.

It is an amenable number.

25403297 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403297 is an equidigital number, since it uses as much as digits as its factorization.

25403297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 25403297 is about 5040.1683503629. The cubic root of 25403297 is about 293.9657240187.

The spelling of 25403297 in words is "twenty-five million, four hundred three thousand, two hundred ninety-seven".