27977225 has 24 divisors (see below), whose sum is σ = 35726880. Its totient is φ = 21726720.

The previous prime is 27977207. The next prime is 27977231. The reversal of 27977225 is 52277972.

It is not a de Polignac number, because 27977225 - 2¹⁴ = 27960841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201206 + ... + 201344.

It is an arithmetic number, because the mean of its divisors is an integer number (1488620).

Almost surely, 2^27977225 is an apocalyptic number.

27977225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27977225 is a deficient number, since it is larger than the sum of its proper divisors (7749655).

27977225 is a wasteful number, since it uses less digits than its factorization.

27977225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 324 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The square root of 27977225 is about 5289.3501491204. The cubic root of 27977225 is about 303.5765435289.

The spelling of 27977225 in words is "twenty-seven million, nine hundred seventy-seven thousand, two hundred twenty-five".