25453009 has 2 divisors, whose sum is σ = 25453010. Its totient is φ = 25453008.

The previous prime is 25452967. The next prime is 25453037. The reversal of 25453009 is 90035452.

It is an a-pointer prime, because the next prime (25453037) can be obtained adding 25453009 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25280784 + 172225 = 5028^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 25453009 - 2¹³ = 25444817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25453069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12726504 + 12726505.

It is an arithmetic number, because the mean of its divisors is an integer number (12726505).

Almost surely, 2^25453009 is an apocalyptic number.

It is an amenable number.

25453009 is a deficient number, since it is larger than the sum of its proper divisors (1).

25453009 is an equidigital number, since it uses as much as digits as its factorization.

25453009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25453009 is about 5045.0975213567. The cubic root of 25453009 is about 294.1573540251.

The spelling of 25453009 in words is "twenty-five million, four hundred fifty-three thousand, nine".