27997325 has 36 divisors (see below), whose sum is σ = 38057460. Its totient is φ = 20401920.

The previous prime is 27997313. The next prime is 27997327. The reversal of 27997325 is 52379972.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 256036 + 27741289 = 506^2 + 5267^2 .

It is not a de Polignac number, because 27997325 - 2⁸ = 27997069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27997327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 383489 + ... + 383561.

Almost surely, 2^27997325 is an apocalyptic number.

27997325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27997325 is a deficient number, since it is larger than the sum of its proper divisors (10060135).

27997325 is a wasteful number, since it uses less digits than its factorization.

27997325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 130 counting only the distinct ones).

The product of its digits is 238140, while the sum is 44.

The square root of 27997325 is about 5291.2498523506. The cubic root of 27997325 is about 303.6492267897.

The spelling of 27997325 in words is "twenty-seven million, nine hundred ninety-seven thousand, three hundred twenty-five".