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20525054215 = 53723738039
BaseRepresentation
bin10011000111011000…
…110111100100000111
31221222102111210020011
4103013120313210013
5314013403213330
613232403051051
71324426040131
oct230730674407
957872453204
1020525054215
118782949026
123b89970a87
131c213c27c3
14dc9d20051
15801dd282a
hex4c7637907

20525054215 has 24 divisors (see below), whose sum is σ = 25384756320. Its totient is φ = 15931444608.

The previous prime is 20525054201. The next prime is 20525054219. The reversal of 20525054215 is 51245052502.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-20525054215 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525054219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2549166 + ... + 2557204.

It is an arithmetic number, because the mean of its divisors is an integer number (1057698180).

Almost surely, 220525054215 is an apocalyptic number.

20525054215 is a deficient number, since it is larger than the sum of its proper divisors (4859702105).

20525054215 is an equidigital number, since it uses as much as digits as its factorization.

20525054215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491 (or 8454 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 20525054215 in words is "twenty billion, five hundred twenty-five million, fifty-four thousand, two hundred fifteen".

Divisors: 1 5 37 185 373 1369 1865 6845 8039 13801 40195 69005 297443 510637 1487215 2553185 2998547 11005391 14992735 55026955 110946239 554731195 4105010843 20525054215