27225191 has 4 divisors (see below), whose sum is σ = 31114512. Its totient is φ = 23335872.

The previous prime is 27225179. The next prime is 27225197. The reversal of 27225191 is 19152272.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27225191 - 2⁶ = 27225127 is a prime.

It is a super-2 number, since 2×27225191² = 1482422049972962, 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 (27225197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944650 + ... + 1944663.

It is an arithmetic number, because the mean of its divisors is an integer number (7778628).

Almost surely, 2^27225191 is an apocalyptic number.

27225191 is a deficient number, since it is larger than the sum of its proper divisors (3889321).

27225191 is an equidigital number, since it uses as much as digits as its factorization.

27225191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889320.

The product of its digits is 2520, while the sum is 29.

The square root of 27225191 is about 5217.7764421255. The cubic root of 27225191 is about 300.8317326789.

The spelling of 27225191 in words is "twenty-seven million, two hundred twenty-five thousand, one hundred ninety-one".