27265409 has 2 divisors, whose sum is σ = 27265410. Its totient is φ = 27265408.

The previous prime is 27265393. The next prime is 27265453. The reversal of 27265409 is 90456272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19114384 + 8151025 = 4372^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 27265409 - 2⁴ = 27265393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27265489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13632704 + 13632705.

It is an arithmetic number, because the mean of its divisors is an integer number (13632705).

Almost surely, 2^27265409 is an apocalyptic number.

It is an amenable number.

27265409 is a deficient number, since it is larger than the sum of its proper divisors (1).

27265409 is an equidigital number, since it uses as much as digits as its factorization.

27265409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 27265409 is about 5221.6289603916. The cubic root of 27265409 is about 300.9797928326.

The spelling of 27265409 in words is "twenty-seven million, two hundred sixty-five thousand, four hundred nine".