25242443 has 2 divisors, whose sum is σ = 25242444. Its totient is φ = 25242442.

The previous prime is 25242439. The next prime is 25242449. The reversal of 25242443 is 34424252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25242443 - 2² = 25242439 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25242449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621221 + 12621222.

It is an arithmetic number, because the mean of its divisors is an integer number (12621222).

Almost surely, 2^25242443 is an apocalyptic number.

25242443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25242443 is an equidigital number, since it uses as much as digits as its factorization.

25242443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 26.

The square root of 25242443 is about 5024.1858046852. The cubic root of 25242443 is about 293.3439448927.

Adding to 25242443 its reverse (34424252), we get a palindrome (59666695).

The spelling of 25242443 in words is "twenty-five million, two hundred forty-two thousand, four hundred forty-three".