27944425 has 18 divisors (see below), whose sum is σ = 36240302. Its totient is φ = 21373440.

The previous prime is 27944417. The next prime is 27944431. The reversal of 27944425 is 52444972.

It can be written as a sum of positive squares in 3 ways, for example, as 444889 + 27499536 = 667^2 + 5244^2 .

It is not a de Polignac number, because 27944425 - 2³ = 27944417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12169 + ... + 14281.

Almost surely, 2^27944425 is an apocalyptic number.

27944425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27944425 is a deficient number, since it is larger than the sum of its proper divisors (8295877).

27944425 is a wasteful number, since it uses less digits than its factorization.

27944425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2141 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 27944425 is about 5286.2486698982. The cubic root of 27944425 is about 303.4578612266.

The spelling of 27944425 in words is "twenty-seven million, nine hundred forty-four thousand, four hundred twenty-five".