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22025105 = 54405021
BaseRepresentation
bin101010000000…
…1001110010001
31112102222202122
41110001032101
521114300410
62104024025
7355132064
oct124011621
945388678
1022025105
1111483873
127462015
13474210b
142cd48db
151e00e55
hex1501391

22025105 has 4 divisors (see below), whose sum is σ = 26430132. Its totient is φ = 17620080.

The previous prime is 22025083. The next prime is 22025117. The reversal of 22025105 is 50152022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10942864 + 11082241 = 3308^2 + 3329^2 .

It is not a de Polignac number, because 22025105 - 210 = 22024081 is a prime.

It is a super-2 number, since 2×220251052 = 970210500522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202506 + ... + 2202515.

It is an arithmetic number, because the mean of its divisors is an integer number (6607533).

Almost surely, 222025105 is an apocalyptic number.

It is an amenable number.

22025105 is a deficient number, since it is larger than the sum of its proper divisors (4405027).

22025105 is an equidigital number, since it uses as much as digits as its factorization.

22025105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405026.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 22025105 is about 4693.0911987729. The cubic root of 22025105 is about 280.3104761815.

Adding to 22025105 its reverse (50152022), we get a palindrome (72177127).

The spelling of 22025105 in words is "twenty-two million, twenty-five thousand, one hundred five".

Divisors: 1 5 4405021 22025105