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7750125 = 3253832
BaseRepresentation
bin11101100100000111101101
3112120202011200
4131210013231
53441001000
6434040113
7122606055
oct35440755
915522150
107750125
114413869
122719039
1317b4796
14105a565
15a31500
hex7641ed

7750125 has 36 divisors (see below), whose sum is σ = 14141244. Its totient is φ = 4083600.

The previous prime is 7750121. The next prime is 7750139. The reversal of 7750125 is 5210577.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

7750125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 248004 + 7502121 = 498^2 + 2739^2 .

It is not a de Polignac number, because 7750125 - 22 = 7750121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7750121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93334 + ... + 93416.

Almost surely, 27750125 is an apocalyptic number.

7750125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7750125 is a deficient number, since it is larger than the sum of its proper divisors (6391119).

7750125 is an equidigital number, since it uses as much as digits as its factorization.

7750125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 7750125 is about 2783.9046319872. The cubic root of 7750125 is about 197.8956444277.

It can be divided in two parts, 7750 and 125, that added together give a triangular number (7875 = T125).

The spelling of 7750125 in words is "seven million, seven hundred fifty thousand, one hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 83 125 225 249 375 415 747 1125 1245 2075 3735 6225 6889 10375 18675 20667 31125 34445 62001 93375 103335 172225 310005 516675 861125 1550025 2583375 7750125