25122271 has 2 divisors, whose sum is σ = 25122272. Its totient is φ = 25122270.

The previous prime is 25122247. The next prime is 25122283. The reversal of 25122271 is 17222152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25122271 - 2⁵ = 25122239 is a prime.

It is a super-2 number, since 2×25122271² = 1262257000394882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561135 + 12561136.

It is an arithmetic number, because the mean of its divisors is an integer number (12561136).

Almost surely, 2^25122271 is an apocalyptic number.

25122271 is a deficient number, since it is larger than the sum of its proper divisors (1).

25122271 is an equidigital number, since it uses as much as digits as its factorization.

25122271 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25122271 is about 5012.2121862507. The cubic root of 25122271 is about 292.8776955407.

It can be divided in two parts, 251 and 22271, that added together give a palindrome (22522).

The spelling of 25122271 in words is "twenty-five million, one hundred twenty-two thousand, two hundred seventy-one".