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25704080 = 245321301
BaseRepresentation
bin110001000001…
…1011010010000
31210100220100222
41202003122100
523040012310
62314532212
7431324003
oct142033220
953326328
1025704080
1113566946
128737068
13542c81c
1435b153a
1523cb055
hex1883690

25704080 has 20 divisors (see below), whose sum is σ = 59762172. Its totient is φ = 10281600.

The previous prime is 25704073. The next prime is 25704083. The reversal of 25704080 is 8040752.

It can be written as a sum of positive squares in 2 ways, for example, as 11806096 + 13897984 = 3436^2 + 3728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (25704083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160571 + ... + 160730.

Almost surely, 225704080 is an apocalyptic number.

25704080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25704080 is an abundant number, since it is smaller than the sum of its proper divisors (34058092).

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

25704080 is a wasteful number, since it uses less digits than its factorization.

25704080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321314 (or 321308 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 25704080 is about 5069.9191315050. The cubic root of 25704080 is about 295.1213902412.

The spelling of 25704080 in words is "twenty-five million, seven hundred four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 321301 642602 1285204 1606505 2570408 3213010 5140816 6426020 12852040 25704080