25306223 has 2 divisors, whose sum is σ = 25306224. Its totient is φ = 25306222.

The previous prime is 25306219. The next prime is 25306243. The reversal of 25306223 is 32260352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25306223 - 2² = 25306219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25306243) 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, 12653111 + 12653112.

It is an arithmetic number, because the mean of its divisors is an integer number (12653112).

Almost surely, 2^25306223 is an apocalyptic number.

25306223 is a deficient number, since it is larger than the sum of its proper divisors (1).

25306223 is an equidigital number, since it uses as much as digits as its factorization.

25306223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 25306223 is about 5030.5290974211. The cubic root of 25306223 is about 293.5908008351.

Adding to 25306223 its reverse (32260352), we get a palindrome (57566575).

The spelling of 25306223 in words is "twenty-five million, three hundred six thousand, two hundred twenty-three".