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87508420925 = 525959327743
BaseRepresentation
bin101000101111111101…
…0001000100100111101
322100212121112101011212
41101133322020210331
52413204123432200
6104111213054205
76215353206422
oct1213772104475
9270777471155
1087508420925
1134126249932
1214b62487365
138337880a33
14434203dd49
152422766035
hex145fe8893d

87508420925 has 12 divisors (see below), whose sum is σ = 110349603840. Its totient is φ = 68820180720.

The previous prime is 87508420913. The next prime is 87508420927. The reversal of 87508420925 is 52902480578.

It is not a de Polignac number, because 87508420925 - 218 = 87508158781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87508420927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29662397 + ... + 29665346.

It is an arithmetic number, because the mean of its divisors is an integer number (9195800320).

Almost surely, 287508420925 is an apocalyptic number.

It is an amenable number.

87508420925 is a deficient number, since it is larger than the sum of its proper divisors (22841182915).

87508420925 is a wasteful number, since it uses less digits than its factorization.

87508420925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59327812 (or 59327807 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 87508420925 in words is "eighty-seven billion, five hundred eight million, four hundred twenty thousand, nine hundred twenty-five".

Divisors: 1 5 25 59 295 1475 59327743 296638715 1483193575 3500336837 17501684185 87508420925