25222129 has 2 divisors, whose sum is σ = 25222130. Its totient is φ = 25222128.

The previous prime is 25222121. The next prime is 25222151. The reversal of 25222129 is 92122252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 2640625 = 4752^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 25222129 - 2³ = 25222121 is a prime.

It is not a weakly prime, because it can be changed into another prime (25222121) 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, 12611064 + 12611065.

It is an arithmetic number, because the mean of its divisors is an integer number (12611065).

Almost surely, 2^25222129 is an apocalyptic number.

It is an amenable number.

25222129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25222129 is an equidigital number, since it uses as much as digits as its factorization.

25222129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 25222129 is about 5022.1637767002. The cubic root of 25222129 is about 293.2652337035.

The spelling of 25222129 in words is "twenty-five million, two hundred twenty-two thousand, one hundred twenty-nine".