20625227 has 12 divisors (see below), whose sum is σ = 25037136. Its totient is φ = 16909200.

The previous prime is 20625217. The next prime is 20625239. The reversal of 20625227 is 72252602.

It is not a de Polignac number, because 20625227 - 2¹² = 20621131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20625196 and 20625205.

It is not an unprimeable number, because it can be changed into a prime (20625217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8024 + ... + 10277.

It is an arithmetic number, because the mean of its divisors is an integer number (2086428).

Almost surely, 2^20625227 is an apocalyptic number.

20625227 is a deficient number, since it is larger than the sum of its proper divisors (4411909).

20625227 is a wasteful number, since it uses less digits than its factorization.

20625227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18338 (or 18331 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20625227 is about 4541.5005229549. The cubic root of 20625227 is about 274.2413337198.

Adding to 20625227 its reverse (72252602), we get a palindrome (92877829).

The spelling of 20625227 in words is "twenty million, six hundred twenty-five thousand, two hundred twenty-seven".