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25484680 = 2351349009
BaseRepresentation
bin110000100110…
…1110110001000
31202221202102001
41201031312020
523011002210
62310120344
7426421234
oct141156610
952852361
1025484680
1113427021
1286500b4
1353839c0
1435555c4
15238603a
hex184dd88

25484680 has 32 divisors (see below), whose sum is σ = 61752600. Its totient is φ = 9409536.

The previous prime is 25484671. The next prime is 25484699. The reversal of 25484680 is 8648452.

It can be written as a sum of positive squares in 4 ways, for example, as 6770404 + 18714276 = 2602^2 + 4326^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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, 23985 + ... + 25024.

Almost surely, 225484680 is an apocalyptic number.

25484680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25484680 is an abundant number, since it is smaller than the sum of its proper divisors (36267920).

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

25484680 is a wasteful number, since it uses less digits than its factorization.

25484680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49033 (or 49029 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 25484680 is about 5048.2353352434. The cubic root of 25484680 is about 294.2793094315.

The spelling of 25484680 in words is "twenty-five million, four hundred eighty-four thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 49009 98018 196036 245045 392072 490090 637117 980180 1274234 1960360 2548468 3185585 5096936 6371170 12742340 25484680