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25842839 = 1117138197
BaseRepresentation
bin110001010010…
…1010010010111
31210121221201012
41202211102113
523103432324
62321522435
7432442361
oct142452227
953557635
1025842839
1113651120
1287a341b
13547aa29
143609d31
15240720e
hex18a5497

25842839 has 8 divisors (see below), whose sum is σ = 29850768. Its totient is φ = 22111360.

The previous prime is 25842829. The next prime is 25842851. The reversal of 25842839 is 93824852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-25842839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25842796 and 25842805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25842829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68912 + ... + 69285.

It is an arithmetic number, because the mean of its divisors is an integer number (3731346).

Almost surely, 225842839 is an apocalyptic number.

25842839 is a deficient number, since it is larger than the sum of its proper divisors (4007929).

25842839 is a wasteful number, since it uses less digits than its factorization.

25842839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138225.

The product of its digits is 138240, while the sum is 41.

The square root of 25842839 is about 5083.5852505884. The cubic root of 25842839 is about 295.6514913081.

The spelling of 25842839 in words is "twenty-five million, eight hundred forty-two thousand, eight hundred thirty-nine".

Divisors: 1 11 17 187 138197 1520167 2349349 25842839