25320443 has 2 divisors, whose sum is σ = 25320444. Its totient is φ = 25320442.

The previous prime is 25320433. The next prime is 25320467. The reversal of 25320443 is 34402352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25320443 - 2⁸ = 25320187 is a prime.

It is a super-2 number, since 2×25320443² = 1282249667432498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25320403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12660221 + 12660222.

It is an arithmetic number, because the mean of its divisors is an integer number (12660222).

Almost surely, 2^25320443 is an apocalyptic number.

25320443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25320443 is an equidigital number, since it uses as much as digits as its factorization.

25320443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 25320443 is about 5031.9422691442. The cubic root of 25320443 is about 293.6457817708.

Adding to 25320443 its reverse (34402352), we get a palindrome (59722795).

The spelling of 25320443 in words is "twenty-five million, three hundred twenty thousand, four hundred forty-three".