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85185025085 = 5314312780949
BaseRepresentation
bin100111101010101101…
…1000101010000111101
322010212200122122021002
41033111123011100331
52343424331300320
6103044454420045
76103651523546
oct1172533052075
9263780578232
1085185025085
11331437a9186
1214614361625
1380574068b4
1441a16414cd
1523387c2675
hex13d56c543d

85185025085 has 16 divisors (see below), whose sum is σ = 107973465600. Its totient is φ = 64415977920.

The previous prime is 85185025069. The next prime is 85185025117. The reversal of 85185025085 is 58052058158.

It is not a de Polignac number, because 85185025085 - 24 = 85185025069 is a prime.

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, 6383810 + ... + 6397139.

It is an arithmetic number, because the mean of its divisors is an integer number (6748341600).

Almost surely, 285185025085 is an apocalyptic number.

It is an amenable number.

85185025085 is a deficient number, since it is larger than the sum of its proper divisors (22788440515).

85185025085 is a wasteful number, since it uses less digits than its factorization.

85185025085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12781028.

The product of its (nonzero) digits is 640000, while the sum is 47.

The spelling of 85185025085 in words is "eighty-five billion, one hundred eighty-five million, twenty-five thousand, eighty-five".

Divisors: 1 5 31 43 155 215 1333 6665 12780949 63904745 396209419 549580807 1981047095 2747904035 17037005017 85185025085