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2842225 = 52234943

2842225 has 12 divisors (see below), whose sum is σ = 3678336. Its totient is φ = 2174480.

The previous prime is 2842223. The next prime is 2842237. The reversal of 2842225 is 5222482.

It is not a de Polignac number, because 2842225 - 21 = 2842223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

2842225 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2842225.

It is not an unprimeable number, because it can be changed into a prime (2842223) 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 11 ways as a sum of consecutive naturals, for example, 1897 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (306528).

22842225 is an apocalyptic number.

2842225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2842225 is a deficient number, since it is larger than the sum of its proper divisors (836111).

2842225 is a wasteful number, since it uses less digits than its factorization.

2842225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4971 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 2842225 is about 1685.8899726851. The cubic root of 2842225 is about 141.6509478907.

The spelling of 2842225 in words is "two million, eight hundred forty-two thousand, two hundred twenty-five".

Divisors: 1 5 23 25 115 575 4943 24715 113689 123575 568445 2842225