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25680324 = 22319163691
BaseRepresentation
bin110000111110…
…1100111000100
31210022200210010
41201331213010
523033232244
62314230220
7431164515
oct141754704
953280703
1025680324
111355000a
128725370
135421a77
1435a6a0c
1523c3eb9
hex187d9c4

25680324 has 48 divisors (see below), whose sum is σ = 63553280. Its totient is φ = 8048160.

The previous prime is 25680313. The next prime is 25680337. The reversal of 25680324 is 42308652.

It is a junction number, because it is equal to n+sod(n) for n = 25680291 and 25680300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36819 + ... + 37509.

Almost surely, 225680324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25680324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31776640).

25680324 is an abundant number, since it is smaller than the sum of its proper divisors (37872956).

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

25680324 is a wasteful number, since it uses less digits than its factorization.

25680324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 25680324 is about 5067.5757517772. The cubic root of 25680324 is about 295.0304440476.

Adding to 25680324 its reverse (42308652), we get a palindrome (67988976).

The spelling of 25680324 in words is "twenty-five million, six hundred eighty thousand, three hundred twenty-four".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 163 228 326 489 652 691 978 1382 1956 2073 2764 3097 4146 6194 8292 9291 12388 13129 18582 26258 37164 39387 52516 78774 112633 157548 225266 337899 450532 675798 1351596 2140027 4280054 6420081 8560108 12840162 25680324