27825231 has 8 divisors (see below), whose sum is σ = 42400384. Its totient is φ = 15900120.

The previous prime is 27825179. The next prime is 27825247. The reversal of 27825231 is 13252872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27825231 - 2²³ = 19436623 is a prime.

It is a super-2 number, since 2×27825231² = 1548486960406722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27825251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662485 + ... + 662526.

It is an arithmetic number, because the mean of its divisors is an integer number (5300048).

Almost surely, 2^27825231 is an apocalyptic number.

27825231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27825231 is a deficient number, since it is larger than the sum of its proper divisors (14575153).

27825231 is a wasteful number, since it uses less digits than its factorization.

27825231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325021.

The product of its digits is 6720, while the sum is 30.

The square root of 27825231 is about 5274.9626538962. The cubic root of 27825231 is about 303.0257904830.

The spelling of 27825231 in words is "twenty-seven million, eight hundred twenty-five thousand, two hundred thirty-one".