25223171 has 2 divisors, whose sum is σ = 25223172. Its totient is φ = 25223170.

The previous prime is 25223141. The next prime is 25223183. The reversal of 25223171 is 17132252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25223171 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (25223101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12611585 + 12611586.

It is an arithmetic number, because the mean of its divisors is an integer number (12611586).

Almost surely, 2^25223171 is an apocalyptic number.

25223171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25223171 is an equidigital number, since it uses as much as digits as its factorization.

25223171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 25223171 is about 5022.2675157741. The cubic root of 25223171 is about 293.2692721964.

The spelling of 25223171 in words is "twenty-five million, two hundred twenty-three thousand, one hundred seventy-one".