27561125 has 16 divisors (see below), whose sum is σ = 34844160. Its totient is φ = 21762000.

The previous prime is 27561103. The next prime is 27561133. The reversal of 27561125 is 52116572.

It is not a de Polignac number, because 27561125 - 2¹⁰ = 27560101 is a prime.

It is a super-2 number, since 2×27561125² = 1519231222531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8480 + ... + 11270.

It is an arithmetic number, because the mean of its divisors is an integer number (2177760).

Almost surely, 2^27561125 is an apocalyptic number.

27561125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27561125 is a deficient number, since it is larger than the sum of its proper divisors (7283035).

27561125 is an equidigital number, since it uses as much as digits as its factorization.

27561125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2875 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 27561125 is about 5249.8690459858. The cubic root of 27561125 is about 302.0640077477.

Adding to 27561125 its reverse (52116572), we get a palindrome (79677697).

It can be divided in two parts, 2 and 7561125, that multiplied together give a triangular number (15122250 = T₅₄₉₉).

The spelling of 27561125 in words is "twenty-seven million, five hundred sixty-one thousand, one hundred twenty-five".