20224425 has 24 divisors (see below), whose sum is σ = 36011584. Its totient is φ = 9956160.

The previous prime is 20224423. The next prime is 20224447. The reversal of 20224425 is 52442202.

It is not a de Polignac number, because 20224425 - 2¹ = 20224423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20224423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9397 + ... + 11346.

Almost surely, 2^20224425 is an apocalyptic number.

20224425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20224425 is a deficient number, since it is larger than the sum of its proper divisors (15787159).

20224425 is a wasteful number, since it uses less digits than its factorization.

20224425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20769 (or 20764 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20224425 is about 4497.1574355364. The cubic root of 20224425 is about 272.4532927831.

Adding to 20224425 its reverse (52442202), we get a palindrome (72666627).

The spelling of 20224425 in words is "twenty million, two hundred twenty-four thousand, four hundred twenty-five".