27689225 has 6 divisors (see below), whose sum is σ = 34334670. Its totient is φ = 22151360.

The previous prime is 27689201. The next prime is 27689237. The reversal of 27689225 is 52298672.

It can be written as a sum of positive squares in 3 ways, for example, as 273529 + 27415696 = 523^2 + 5236^2 .

It is not a de Polignac number, because 27689225 - 2¹⁰ = 27688201 is a prime.

It is a super-2 number, since 2×27689225² = 1533386362201250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553760 + ... + 553809.

It is an arithmetic number, because the mean of its divisors is an integer number (5722445).

Almost surely, 2^27689225 is an apocalyptic number.

27689225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27689225 is a deficient number, since it is larger than the sum of its proper divisors (6645445).

27689225 is a wasteful number, since it uses less digits than its factorization.

27689225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107579 (or 1107574 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 27689225 is about 5262.0552068560. The cubic root of 27689225 is about 302.5312674007.

The spelling of 27689225 in words is "twenty-seven million, six hundred eighty-nine thousand, two hundred twenty-five".