27225891 has 48 divisors (see below), whose sum is σ = 51936768. Its totient is φ = 13305600.

The previous prime is 27225883. The next prime is 27225907. The reversal of 27225891 is 19852272.

27225891 is a `hidden beast` number, since 2 + 72 + 2 + 589 + 1 = 666.

It is not a de Polignac number, because 27225891 - 2³ = 27225883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27225871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10626 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (1082016).

Almost surely, 2^27225891 is an apocalyptic number.

27225891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27225891 is a deficient number, since it is larger than the sum of its proper divisors (24710877).

27225891 is a wasteful number, since it uses less digits than its factorization.

27225891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2349 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 27225891 is about 5217.8435200761. The cubic root of 27225891 is about 300.8343109333.

The spelling of 27225891 in words is "twenty-seven million, two hundred twenty-five thousand, eight hundred ninety-one".