25121227 has 2 divisors, whose sum is σ = 25121228. Its totient is φ = 25121226.

The previous prime is 25121209. The next prime is 25121237. The reversal of 25121227 is 72212152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25121227 - 2¹¹ = 25119179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25121198 and 25121207.

It is not a weakly prime, because it can be changed into another prime (25121207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560613 + 12560614.

It is an arithmetic number, because the mean of its divisors is an integer number (12560614).

Almost surely, 2^25121227 is an apocalyptic number.

25121227 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121227 is an equidigital number, since it uses as much as digits as its factorization.

25121227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 22.

The square root of 25121227 is about 5012.1080395379. The cubic root of 25121227 is about 292.8736384692.

Adding to 25121227 its reverse (72212152), we get a palindrome (97333379).

The spelling of 25121227 in words is "twenty-five million, one hundred twenty-one thousand, two hundred twenty-seven".