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20310427525 = 521979410519
BaseRepresentation
bin10010111010100110…
…001000011110000101
31221102110122121202111
4102322212020132011
5313043432140100
613155214541021
71316211533263
oct227246103605
957373577674
1020310427525
1186827858a3
123b29b07771
131bb8ab6a6b
14da9611433
157dd1396ba
hex4ba988785

20310427525 has 12 divisors (see below), whose sum is σ = 25197717600. Its totient is φ = 16240092080.

The previous prime is 20310427507. The next prime is 20310427537. The reversal of 20310427525 is 52572401302.

It is not a de Polignac number, because 20310427525 - 29 = 20310427013 is a prime.

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, 155785 + ... + 254734.

It is an arithmetic number, because the mean of its divisors is an integer number (2099809800).

Almost surely, 220310427525 is an apocalyptic number.

20310427525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20310427525 is a deficient number, since it is larger than the sum of its proper divisors (4887290075).

20310427525 is a wasteful number, since it uses less digits than its factorization.

20310427525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412508 (or 412503 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

Adding to 20310427525 its reverse (52572401302), we get a palindrome (72882828827).

The spelling of 20310427525 in words is "twenty billion, three hundred ten million, four hundred twenty-seven thousand, five hundred twenty-five".

Divisors: 1 5 25 1979 9895 49475 410519 2052595 10262975 812417101 4062085505 20310427525