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55285903925 = 527315919451
BaseRepresentation
bin110011011111010010…
…111111001000110101
312021200222011220122022
4303133102333020311
51401211142411200
641221544442525
73665015300240
oct633722771065
9167628156568
1055285903925
11214a04a699a
12a86b179445
1352a0c02325
142966776257
151688973885
hexcdf4bf235

55285903925 has 12 divisors (see below), whose sum is σ = 78348024096. Its totient is φ = 37910334000.

The previous prime is 55285903889. The next prime is 55285904027. The reversal of 55285903925 is 52930958255.

It is not a de Polignac number, because 55285903925 - 210 = 55285902901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157959551 + ... + 157959900.

It is an arithmetic number, because the mean of its divisors is an integer number (6529002008).

Almost surely, 255285903925 is an apocalyptic number.

It is an amenable number.

55285903925 is a deficient number, since it is larger than the sum of its proper divisors (23062120171).

55285903925 is a wasteful number, since it uses less digits than its factorization.

55285903925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315919468 (or 315919463 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 55285903925 in words is "fifty-five billion, two hundred eighty-five million, nine hundred three thousand, nine hundred twenty-five".

Divisors: 1 5 7 25 35 175 315919451 1579597255 2211436157 7897986275 11057180785 55285903925