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900125788540 = 2251131113155887
BaseRepresentation
bin11010001100100111010…
…11011000100101111100
310012001101022110210200011
431012103223120211330
5104221424200213130
61525302335313004
7122013645650656
oct15062353304574
93161338423604
10900125788540
113178175a5670
1212654a37b764
1366b5c85b9b4
14317cddab6d6
15186335c752a
hexd193ad897c

900125788540 has 48 divisors (see below), whose sum is σ = 2068737076224. Its totient is φ = 326265972800.

The previous prime is 900125788493. The next prime is 900125788561. The reversal of 900125788540 is 45887521009.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6509524 + ... + 6646363.

It is an arithmetic number, because the mean of its divisors is an integer number (43098689088).

Almost surely, 2900125788540 is an apocalyptic number.

It is an amenable number.

900125788540 is an abundant number, since it is smaller than the sum of its proper divisors (1168611287684).

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

900125788540 is a wasteful number, since it uses less digits than its factorization.

900125788540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13156218 (or 13156216 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 900125788540 in words is "nine hundred billion, one hundred twenty-five million, seven hundred eighty-eight thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 311 622 1244 1555 3110 3421 6220 6842 13684 17105 34210 68420 13155887 26311774 52623548 65779435 131558870 144714757 263117740 289429514 578859028 723573785 1447147570 2894295140 4091480857 8182961714 16365923428 20457404285 40914808570 45006289427 81829617140 90012578854 180025157708 225031447135 450062894270 900125788540