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25875680 = 255433761
BaseRepresentation
bin110001010110…
…1010011100000
31210200121202112
41202231103200
523111010210
62322334452
7432640205
oct142552340
953617675
1025875680
1113673866
1287ba428
13548c96c
143617cac
152411d05
hex18ad4e0

25875680 has 48 divisors (see below), whose sum is σ = 62569584. Its totient is φ = 10106880.

The previous prime is 25875679. The next prime is 25875697. The reversal of 25875680 is 8657852.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5000 + ... + 8760.

It is an arithmetic number, because the mean of its divisors is an integer number (1303533).

Almost surely, 225875680 is an apocalyptic number.

25875680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25875680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31284792).

25875680 is an abundant number, since it is smaller than the sum of its proper divisors (36693904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25875680 is a wasteful number, since it uses less digits than its factorization.

25875680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819 (or 3811 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 25875680 is about 5086.8143272583. The cubic root of 25875680 is about 295.7766759624.

The spelling of 25875680 in words is "twenty-five million, eight hundred seventy-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 80 86 160 172 215 344 430 688 860 1376 1720 3440 3761 6880 7522 15044 18805 30088 37610 60176 75220 120352 150440 161723 300880 323446 601760 646892 808615 1293784 1617230 2587568 3234460 5175136 6468920 12937840 25875680