27225778 has 4 divisors (see below), whose sum is σ = 40838670. Its totient is φ = 13612888.

The previous prime is 27225769. The next prime is 27225797. The reversal of 27225778 is 87752272.

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

It can be written as a sum of positive squares in only one way, i.e., 15233409 + 11992369 = 3903^2 + 3463^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 27225778.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6806443 + ... + 6806446.

Almost surely, 2^27225778 is an apocalyptic number.

27225778 is a deficient number, since it is larger than the sum of its proper divisors (13612892).

27225778 is a wasteful number, since it uses less digits than its factorization.

27225778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13612891.

The product of its digits is 109760, while the sum is 40.

The square root of 27225778 is about 5217.8326918367. The cubic root of 27225778 is about 300.8338947324.

The spelling of 27225778 in words is "twenty-seven million, two hundred twenty-five thousand, seven hundred seventy-eight".