25431223 has 2 divisors, whose sum is σ = 25431224. Its totient is φ = 25431222.

The previous prime is 25431221. The next prime is 25431227. The reversal of 25431223 is 32213452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25431223 - 2¹ = 25431221 is a prime.

Together with 25431221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25431194 and 25431203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25431221) 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, 12715611 + 12715612.

It is an arithmetic number, because the mean of its divisors is an integer number (12715612).

Almost surely, 2^25431223 is an apocalyptic number.

25431223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25431223 is an equidigital number, since it uses as much as digits as its factorization.

25431223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 22.

The square root of 25431223 is about 5042.9379333876. The cubic root of 25431223 is about 294.0734040109.

Adding to 25431223 its reverse (32213452), we get a palindrome (57644675).

The spelling of 25431223 in words is "twenty-five million, four hundred thirty-one thousand, two hundred twenty-three".