25401227 has 2 divisors, whose sum is σ = 25401228. Its totient is φ = 25401226.

The previous prime is 25401221. The next prime is 25401253. The reversal of 25401227 is 72210452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25401227 - 2⁶ = 25401163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25401221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700613 + 12700614.

It is an arithmetic number, because the mean of its divisors is an integer number (12700614).

Almost surely, 2^25401227 is an apocalyptic number.

25401227 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401227 is an equidigital number, since it uses as much as digits as its factorization.

25401227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 25401227 is about 5039.9629958959. The cubic root of 25401227 is about 293.9577391551.

Adding to 25401227 its reverse (72210452), we get a palindrome (97611679).

The spelling of 25401227 in words is "twenty-five million, four hundred one thousand, two hundred twenty-seven".