25422109 has 2 divisors, whose sum is σ = 25422110. Its totient is φ = 25422108.

The previous prime is 25422053. The next prime is 25422113. The reversal of 25422109 is 90122452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24651225 + 770884 = 4965^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 25422109 - 2¹³ = 25413917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25422149) 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, 12711054 + 12711055.

It is an arithmetic number, because the mean of its divisors is an integer number (12711055).

Almost surely, 2^25422109 is an apocalyptic number.

It is an amenable number.

25422109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25422109 is an equidigital number, since it uses as much as digits as its factorization.

25422109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25422109 is about 5042.0342124980. The cubic root of 25422109 is about 294.0382699654.

The spelling of 25422109 in words is "twenty-five million, four hundred twenty-two thousand, one hundred nine".