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97125212500 = 22557770017
BaseRepresentation
bin101101001110100011…
…1010010000101010100
3100021200211020000011121
41122131013102011110
53042403023300000
6112341350213324
710005565453561
oct1323507220524
9307624200147
1097125212500
1138210717768
12169a7054244
13920b058854
1449b532d868
1527d6b7ab1a
hex169d1d2154

97125212500 has 36 divisors (see below), whose sum is σ = 212447832156. Its totient is φ = 38850080000.

The previous prime is 97125212497. The next prime is 97125212507. The reversal of 97125212500 is 521252179.

It can be written as a sum of positive squares in 6 ways, for example, as 57439791556 + 39685420944 = 239666^2 + 199212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97125212507) 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, 3872509 + ... + 3897508.

It is an arithmetic number, because the mean of its divisors is an integer number (5901328671).

Almost surely, 297125212500 is an apocalyptic number.

It is an amenable number.

97125212500 is an abundant number, since it is smaller than the sum of its proper divisors (115322619656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97125212500 is an equidigital number, since it uses as much as digits as its factorization.

97125212500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770046 (or 7770024 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

Adding to 97125212500 its reverse (521252179), we get a palindrome (97646464679).

The spelling of 97125212500 in words is "ninety-seven billion, one hundred twenty-five million, two hundred twelve thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 3125 6250 12500 7770017 15540034 31080068 38850085 77700170 155400340 194250425 388500850 777001700 971252125 1942504250 3885008500 4856260625 9712521250 19425042500 24281303125 48562606250 97125212500