27425 has 6 divisors (see below), whose sum is σ = 34038. Its totient is φ = 21920.

The previous prime is 27409. The next prime is 27427. The reversal of 27425 is 52472.

It can be written as a sum of positive squares in 3 ways, for example, as 529 + 26896 = 23^2 + 164^2 .

It is not a de Polignac number, because 27425 - 2⁴ = 27409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 27397 and 27406.

It is not an unprimeable number, because it can be changed into a prime (27427) 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 in 5 ways as a sum of consecutive naturals, for example, 524 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (5673).

2²⁷⁴²⁵ is an apocalyptic number.

27425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27425 is a deficient number, since it is larger than the sum of its proper divisors (6613).

27425 is a wasteful number, since it uses less digits than its factorization.

27425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1102 counting only the distinct ones).

The product of its digits is 560, while the sum is 20.

The square root of 27425 is about 165.6049516168. The cubic root of 27425 is about 30.1565886518.

Adding to 27425 its reverse (52472), we get a palindrome (79897).

The spelling of 27425 in words is "twenty-seven thousand, four hundred twenty-five".