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2238025 = 5289521
BaseRepresentation
bin1000100010011001001001
311012200222211
420202121021
51033104100
6115545121
725010566
oct10423111
94180884
102238025
111299509
128bb1a1
1360489a
1442386d
152e31ba
hex222649

2238025 has 6 divisors (see below), whose sum is σ = 2775182. Its totient is φ = 1790400.

The previous prime is 2238023. The next prime is 2238043. The reversal of 2238025 is 5208322.

It can be written as a sum of positive squares in 3 ways, for example, as 9 + 2238016 = 3^2 + 1496^2 .

It is not a de Polignac number, because 2238025 - 21 = 2238023 is a prime.

It is a Duffinian number.

2238025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2237987 and 2238005.

It is not an unprimeable number, because it can be changed into a prime (2238023) 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, 44736 + ... + 44785.

22238025 is an apocalyptic number.

2238025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2238025 is a deficient number, since it is larger than the sum of its proper divisors (537157).

2238025 is an equidigital number, since it uses as much as digits as its factorization.

2238025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89531 (or 89526 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2238025 is about 1496.0030080184. The cubic root of 2238025 is about 130.8041866005.

The spelling of 2238025 in words is "two million, two hundred thirty-eight thousand, twenty-five".

Divisors: 1 5 25 89521 447605 2238025