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128056754025 = 3252920361843
BaseRepresentation
bin111011101000011000…
…1101111111101101001
3110020112111101010021200
41313100301233331221
54044230012112100
6134454540354413
712152236310124
oct1672061577551
9406474333250
10128056754025
114a343776722
1220999b45a09
13c0ca40bb45
1462ab3853bb
1534e7461e00
hex1dd0c6ff69

128056754025 has 36 divisors (see below), whose sum is σ = 229392506928. Its totient is φ = 68288410080.

The previous prime is 128056754017. The next prime is 128056754051. The reversal of 128056754025 is 520457650821.

128056754025 is a `hidden beast` number, since 1 + 2 + 80 + 5 + 6 + 7 + 540 + 25 = 666.

It is not a de Polignac number, because 128056754025 - 23 = 128056754017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2039754 + ... + 2101596.

Almost surely, 2128056754025 is an apocalyptic number.

128056754025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128056754025 is a deficient number, since it is larger than the sum of its proper divisors (101335752903).

128056754025 is a wasteful number, since it uses less digits than its factorization.

128056754025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71062 (or 71054 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 128056754025 in words is "one hundred twenty-eight billion, fifty-six million, seven hundred fifty-four thousand, twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 9203 27609 46015 61843 82827 138045 185529 230075 309215 414135 556587 690225 927645 1546075 2070675 2782935 4638225 13914675 569141129 1707423387 2845705645 5122270161 8537116935 14228528225 25611350805 42685584675 128056754025