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25479 = 3219149
BaseRepresentation
bin110001110000111
31021221200
412032013
51303404
6313543
7134166
oct61607
937850
1025479
1118163
12128b3
13b79c
1493dd
157839
hex6387

25479 has 12 divisors (see below), whose sum is σ = 39000. Its totient is φ = 15984.

The previous prime is 25471. The next prime is 25523. The reversal of 25479 is 97452.

25479 = T42 + T43 + ... + T60.

25479 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 25479 - 23 = 25471 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 213 + 53 + 47 + 72 + 93 .

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25479.

It is not an unprimeable number, because it can be changed into a prime (25471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97 + ... + 245.

It is an arithmetic number, because the mean of its divisors is an integer number (3250).

225479 is an apocalyptic number.

25479 is a deficient number, since it is larger than the sum of its proper divisors (13521).

25479 is a wasteful number, since it uses less digits than its factorization.

25479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 171 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25479 is about 159.6214271331. The cubic root of 25479 is about 29.4257444914.

Subtracting from 25479 its sum of digits (27), we obtain a palindrome (25452).

It can be divided in two parts, 2547 and 9, that added together give a triangular number (2556 = T71).

The spelling of 25479 in words is "twenty-five thousand, four hundred seventy-nine".

Divisors: 1 3 9 19 57 149 171 447 1341 2831 8493 25479