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25768071240 = 2335678131667
BaseRepresentation
bin10111111111111001…
…011001000001001000
32110111211011122110220
4113333321121001020
5410233111234430
615500535110040
71601361664062
oct277771310110
973454148426
1025768071240
11aa2344a34a
124bb1812320
1325786ba542
1413663a0732
15a0c33e110
hex5ffe59048

25768071240 has 64 divisors (see below), whose sum is σ = 77318055360. Its totient is φ = 6870255360.

The previous prime is 25768071227. The next prime is 25768071269. The reversal of 25768071240 is 4217086752.

It is a junction number, because it is equal to n+sod(n) for n = 25768071192 and 25768071201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797887 + ... + 829553.

It is an arithmetic number, because the mean of its divisors is an integer number (1208094615).

Almost surely, 225768071240 is an apocalyptic number.

25768071240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25768071240 is an abundant number, since it is smaller than the sum of its proper divisors (51549984120).

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

25768071240 is a wasteful number, since it uses less digits than its factorization.

25768071240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38462 (or 38458 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 25768071240 in words is "twenty-five billion, seven hundred sixty-eight million, seventy-one thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 6781 13562 20343 27124 31667 33905 40686 54248 63334 67810 81372 95001 101715 126668 135620 158335 162744 190002 203430 253336 271240 316670 380004 406860 475005 633340 760008 813720 950010 1266680 1900020 3800040 214733927 429467854 644201781 858935708 1073669635 1288403562 1717871416 2147339270 2576807124 3221008905 4294678540 5153614248 6442017810 8589357080 12884035620 25768071240