27225405 has 12 divisors (see below), whose sum is σ = 47190780. Its totient is φ = 14520192.

The previous prime is 27225397. The next prime is 27225413. The reversal of 27225405 is 50452272.

It is an interprime number because it is at equal distance from previous prime (27225397) and next prime (27225413).

It can be written as a sum of positive squares in 2 ways, for example, as 18896409 + 8328996 = 4347^2 + 2886^2 .

It is not a de Polignac number, because 27225405 - 2³ = 27225397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302460 + ... + 302549.

It is an arithmetic number, because the mean of its divisors is an integer number (3932565).

Almost surely, 2^27225405 is an apocalyptic number.

It is an amenable number.

27225405 is a deficient number, since it is larger than the sum of its proper divisors (19965375).

27225405 is a wasteful number, since it uses less digits than its factorization.

27225405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605020 (or 605017 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 27225405 is about 5217.7969489048. The cubic root of 27225405 is about 300.8325208928.

Adding to 27225405 its reverse (50452272), we get a palindrome (77677677).

The spelling of 27225405 in words is "twenty-seven million, two hundred twenty-five thousand, four hundred five".