20022425 has 6 divisors (see below), whose sum is σ = 24827838. Its totient is φ = 16017920.

The previous prime is 20022407. The next prime is 20022427. The reversal of 20022425 is 52422002.

It can be written as a sum of positive squares in 3 ways, for example, as 565504 + 19456921 = 752^2 + 4411^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20022425 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400424 + ... + 400473.

It is an arithmetic number, because the mean of its divisors is an integer number (4137973).

Almost surely, 2^20022425 is an apocalyptic number.

20022425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20022425 is a deficient number, since it is larger than the sum of its proper divisors (4805413).

20022425 is an equidigital number, since it uses as much as digits as its factorization.

20022425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800907 (or 800902 counting only the distinct ones).

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

The square root of 20022425 is about 4474.6424438160. The cubic root of 20022425 is about 271.5431751241.

Adding to 20022425 its reverse (52422002), we get a palindrome (72444427).

The spelling of 20022425 in words is "twenty million, twenty-two thousand, four hundred twenty-five".