20366225 has 24 divisors (see below), whose sum is σ = 28450560. Its totient is φ = 14328000.

The previous prime is 20366183. The next prime is 20366237. The reversal of 20366225 is 52266302.

It is not a de Polignac number, because 20366225 - 2⁶ = 20366161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20366194 and 20366203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7331 + ... + 9719.

It is an arithmetic number, because the mean of its divisors is an integer number (1185440).

Almost surely, 2^20366225 is an apocalyptic number.

20366225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20366225 is a deficient number, since it is larger than the sum of its proper divisors (8084335).

20366225 is a wasteful number, since it uses less digits than its factorization.

20366225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20366225 is about 4512.8954120387. The cubic root of 20366225 is about 273.0885631791.

The spelling of 20366225 in words is "twenty million, three hundred sixty-six thousand, two hundred twenty-five".