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25285470950380 = 22517436317045389
BaseRepresentation
bin1011011111111001110111…
…00000111001001111101100
310022112021012221112110121011
411233330323200321033230
511303234121030403010
6125435552431515004
75216546353564234
oct557747340711754
9108467187473534
1025285470950380
118069565184873
122a045b1088a64
1311155430b1404
14635b752b4cc4
152dcaee47ca8a
hex16ff3b8393ec

25285470950380 has 48 divisors (see below), whose sum is σ = 56235877961760. Its totient is φ = 9517053754368.

The previous prime is 25285470950323. The next prime is 25285470950401. The reversal of 25285470950380 is 8305907458252.

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, 7039275 + ... + 10006114.

It is an arithmetic number, because the mean of its divisors is an integer number (1171580790870).

Almost surely, 225285470950380 is an apocalyptic number.

25285470950380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25285470950380 is an abundant number, since it is smaller than the sum of its proper divisors (30950407011380).

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

25285470950380 is a wasteful number, since it uses less digits than its factorization.

25285470950380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17049778 (or 17049776 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 58.

The spelling of 25285470950380 in words is "twenty-five trillion, two hundred eighty-five billion, four hundred seventy million, nine hundred fifty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 4363 8726 17452 21815 43630 74171 87260 148342 296684 370855 741710 1483420 17045389 34090778 68181556 85226945 170453890 289771613 340907780 579543226 1159086452 1448858065 2897716130 5795432260 74369032207 148738064414 297476128828 371845161035 743690322070 1264273547519 1487380644140 2528547095038 5057094190076 6321367737595 12642735475190 25285470950380