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25302925 = 528571181
BaseRepresentation
bin110000010000…
…1011110001101
31202121112002101
41200201132031
522434143200
62302155101
7425033314
oct140413615
952545071
1025302925
111331250a
128582a91
13531c05b
14350927b
15234c26a
hex182178d

25302925 has 12 divisors (see below), whose sum is σ = 31438836. Its totient is φ = 20201600.

The previous prime is 25302923. The next prime is 25302943. The reversal of 25302925 is 52920352.

It can be written as a sum of positive squares in 6 ways, for example, as 3147076 + 22155849 = 1774^2 + 4707^2 .

It is not a de Polignac number, because 25302925 - 21 = 25302923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25302893 and 25302902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25302923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20835 + ... + 22015.

It is an arithmetic number, because the mean of its divisors is an integer number (2619903).

Almost surely, 225302925 is an apocalyptic number.

25302925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25302925 is a deficient number, since it is larger than the sum of its proper divisors (6135911).

25302925 is a wasteful number, since it uses less digits than its factorization.

25302925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25302925 is about 5030.2012882190. The cubic root of 25302925 is about 293.5780463369.

The spelling of 25302925 in words is "twenty-five million, three hundred two thousand, nine hundred twenty-five".

Divisors: 1 5 25 857 1181 4285 5905 21425 29525 1012117 5060585 25302925