20927225 has 12 divisors (see below), whose sum is σ = 28309200. Its totient is φ = 15219600.

The previous prime is 20927147. The next prime is 20927233. The reversal of 20927225 is 52272902.

It is not a de Polignac number, because 20927225 - 2²² = 16732921 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37775 + ... + 38324.

It is an arithmetic number, because the mean of its divisors is an integer number (2359100).

Almost surely, 2^20927225 is an apocalyptic number.

20927225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20927225 is a deficient number, since it is larger than the sum of its proper divisors (7381975).

20927225 is a wasteful number, since it uses less digits than its factorization.

20927225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76120 (or 76115 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20927225 is about 4574.6284002091. The cubic root of 20927225 is about 275.5733492443.

The spelling of 20927225 in words is "twenty million, nine hundred twenty-seven thousand, two hundred twenty-five".