27225561 has 8 divisors (see below), whose sum is σ = 39600864. Its totient is φ = 16500320.

The previous prime is 27225559. The next prime is 27225563. The reversal of 27225561 is 16552272.

It is an interprime number because it is at equal distance from previous prime (27225559) and next prime (27225563).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27225561 - 2¹ = 27225559 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (27225563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 412476 + ... + 412541.

It is an arithmetic number, because the mean of its divisors is an integer number (4950108).

Almost surely, 2^27225561 is an apocalyptic number.

It is an amenable number.

27225561 is a deficient number, since it is larger than the sum of its proper divisors (12375303).

27225561 is a wasteful number, since it uses less digits than its factorization.

27225561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825031.

The product of its digits is 8400, while the sum is 30.

The square root of 27225561 is about 5217.8118977211. The cubic root of 27225561 is about 300.8330954760.

Subtracting from 27225561 its reverse (16552272), we obtain a square (10673289 = 3267²).

The spelling of 27225561 in words is "twenty-seven million, two hundred twenty-five thousand, five hundred sixty-one".