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87916675925 = 5213270512849
BaseRepresentation
bin101000111100000111…
…1100000001101010101
322101221001201212202102
41101320033200031111
52420023132112200
6104215515251445
76231441262301
oct1217017401525
9271831655672
1087916675925
1134315742961
1215057149b85
1383a1322840
144380352d01
15244850a6d5
hex14783e0355

87916675925 has 12 divisors (see below), whose sum is σ = 117402576900. Its totient is φ = 64923083520.

The previous prime is 87916675901. The next prime is 87916675927. The reversal of 87916675925 is 52957661978.

It can be written as a sum of positive squares in 6 ways, for example, as 13012649329 + 74904026596 = 114073^2 + 273686^2 .

It is not a de Polignac number, because 87916675925 - 228 = 87648240469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87916675927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135256100 + ... + 135256749.

It is an arithmetic number, because the mean of its divisors is an integer number (9783548075).

Almost surely, 287916675925 is an apocalyptic number.

It is an amenable number.

87916675925 is a deficient number, since it is larger than the sum of its proper divisors (29485900975).

87916675925 is a wasteful number, since it uses less digits than its factorization.

87916675925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270512872 (or 270512867 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 65.

The spelling of 87916675925 in words is "eighty-seven billion, nine hundred sixteen million, six hundred seventy-five thousand, nine hundred twenty-five".

Divisors: 1 5 13 25 65 325 270512849 1352564245 3516667037 6762821225 17583335185 87916675925