20224025 has 6 divisors (see below), whose sum is σ = 25077822. Its totient is φ = 16179200.

The previous prime is 20224013. The next prime is 20224031. The reversal of 20224025 is 52042202.

It can be written as a sum of positive squares in 3 ways, for example, as 126736 + 20097289 = 356^2 + 4483^2 .

It is not a de Polignac number, because 20224025 - 2¹⁸ = 19961881 is a prime.

It is a super-2 number, since 2×20224025² = 818022374401250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223994 and 20224012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404456 + ... + 404505.

It is an arithmetic number, because the mean of its divisors is an integer number (4179637).

Almost surely, 2^20224025 is an apocalyptic number.

20224025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20224025 is a deficient number, since it is larger than the sum of its proper divisors (4853797).

20224025 is an equidigital number, since it uses as much as digits as its factorization.

20224025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808971 (or 808966 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20224025 is about 4497.1129627796. The cubic root of 20224025 is about 272.4514965716.

Adding to 20224025 its reverse (52042202), we get a palindrome (72266227).

The spelling of 20224025 in words is "twenty million, two hundred twenty-four thousand, twenty-five".