25223213 has 2 divisors, whose sum is σ = 25223214. Its totient is φ = 25223212.

The previous prime is 25223197. The next prime is 25223221. The reversal of 25223213 is 31232252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 11812969 = 3662^2 + 3437^2 .

It is a cyclic number.

It is not a de Polignac number, because 25223213 - 2⁴ = 25223197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25223273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12611606 + 12611607.

It is an arithmetic number, because the mean of its divisors is an integer number (12611607).

Almost surely, 2^25223213 is an apocalyptic number.

It is an amenable number.

25223213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25223213 is an equidigital number, since it uses as much as digits as its factorization.

25223213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 20.

The square root of 25223213 is about 5022.2716971506. The cubic root of 25223213 is about 293.2694349740.

Adding to 25223213 its reverse (31232252), we get a palindrome (56455465).

The spelling of 25223213 in words is "twenty-five million, two hundred twenty-three thousand, two hundred thirteen".