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7880225 = 52383823
BaseRepresentation
bin11110000011111000100001
3112211100122012
4132003320201
54004131400
6440522305
7123660263
oct36037041
915740565
107880225
1144a2591
122780395
13182ba72
141091b33
15a59d35
hex783e21

7880225 has 12 divisors (see below), whose sum is σ = 9808896. Its totient is φ = 6280080.

The previous prime is 7880209. The next prime is 7880227. The reversal of 7880225 is 5220887.

It is not a de Polignac number, because 7880225 - 24 = 7880209 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7880191 and 7880200.

It is not an unprimeable number, because it can be changed into a prime (7880227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9164 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (817408).

Almost surely, 27880225 is an apocalyptic number.

It is an amenable number.

7880225 is a deficient number, since it is larger than the sum of its proper divisors (1928671).

7880225 is a wasteful number, since it uses less digits than its factorization.

7880225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 7880225 is about 2807.1738457032. The cubic root of 7880225 is about 198.9968518815.

The spelling of 7880225 in words is "seven million, eight hundred eighty thousand, two hundred twenty-five".

Divisors: 1 5 25 383 823 1915 4115 9575 20575 315209 1576045 7880225