20255422 has 8 divisors (see below), whose sum is σ = 33145272. Its totient is φ = 9207000.

The previous prime is 20255413. The next prime is 20255423. The reversal of 20255422 is 22455202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 920701 = 20255422 / (2 + 0 + 2 + 5 + 5 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20255393 and 20255402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460329 + ... + 460372.

It is an arithmetic number, because the mean of its divisors is an integer number (4143159).

Almost surely, 2^20255422 is an apocalyptic number.

20255422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20255422 is a deficient number, since it is larger than the sum of its proper divisors (12889850).

20255422 is a wasteful number, since it uses less digits than its factorization.

20255422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920714.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20255422 is about 4500.6024041233. The cubic root of 20255422 is about 272.5924137363.

It can be divided in two parts, 2025 and 5422, that added together give a palindrome (7447).

The spelling of 20255422 in words is "twenty million, two hundred fifty-five thousand, four hundred twenty-two".