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2289925 = 52112757
BaseRepresentation
bin1000101111000100000101
311022100012001
420233010011
51041234200
6121025301
725315111
oct10570405
94270161
102289925
111324500
12925231
136223b1
14438741
1530376a
hex22f105

2289925 has 18 divisors (see below), whose sum is σ = 3125234. Its totient is φ = 1663200.

The previous prime is 2289923. The next prime is 2289929. The reversal of 2289925 is 5299822.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 213444 + 2076481 = 462^2 + 1441^2 .

It is not a de Polignac number, because 2289925 - 21 = 2289923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2647 + ... + 3403.

22289925 is an apocalyptic number.

2289925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2289925 is the 757-th decagonal number.

It is an amenable number.

2289925 is a deficient number, since it is larger than the sum of its proper divisors (835309).

2289925 is a wasteful number, since it uses less digits than its factorization.

2289925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 773 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 2289925 is about 1513.2498141417. The cubic root of 2289925 is about 131.8075900400.

It can be divided in two parts, 228 and 9925, that added together give a triangular number (10153 = T142).

The spelling of 2289925 in words is "two million, two hundred eighty-nine thousand, nine hundred twenty-five".

Divisors: 1 5 11 25 55 121 275 605 757 3025 3785 8327 18925 41635 91597 208175 457985 2289925