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2444425 = 5297777
BaseRepresentation
bin1001010100110010001001
311121012010021
421110302021
51111210200
6124220441
726530414
oct11246211
94535107
102444425
11141a595
1299a721
13677809
14478b7b
1533441a
hex254c89

2444425 has 6 divisors (see below), whose sum is σ = 3031118. Its totient is φ = 1955520.

The previous prime is 2444411. The next prime is 2444437. The reversal of 2444425 is 5244442.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 35721 + 2408704 = 189^2 + 1552^2 .

It is not a de Polignac number, because 2444425 - 213 = 2436233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 97777 = 2444425 / (2 + 4 + 4 + 4 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2444425.

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, 48864 + ... + 48913.

22444425 is an apocalyptic number.

2444425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2444425 is a deficient number, since it is larger than the sum of its proper divisors (586693).

2444425 is an equidigital number, since it uses as much as digits as its factorization.

2444425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97787 (or 97782 counting only the distinct ones).

The product of its digits is 5120, while the sum is 25.

The square root of 2444425 is about 1563.4657015746. The cubic root of 2444425 is about 134.7076435062.

Adding to 2444425 its reverse (5244442), we get a palindrome (7688867).

The spelling of 2444425 in words is "two million, four hundred forty-four thousand, four hundred twenty-five".

Divisors: 1 5 25 97777 488885 2444425