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11725225 = 52469009
BaseRepresentation
bin101100101110…
…100110101001
3211001200222121
4230232212221
511000201400
61055151241
7201443221
oct54564651
924050877
1011725225
116689376
123b15521
132576c05
1417b3081
15106921a
hexb2e9a9

11725225 has 6 divisors (see below), whose sum is σ = 14539310. Its totient is φ = 9380160.

The previous prime is 11725213. The next prime is 11725267. The reversal of 11725225 is 52252711.

It can be written as a sum of positive squares in 3 ways, for example, as 56169 + 11669056 = 237^2 + 3416^2 .

It is not a de Polignac number, because 11725225 - 223 = 3336617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 469009 = 11725225 / (1 + 1 + 7 + 2 + 5 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11725225.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 234480 + ... + 234529.

Almost surely, 211725225 is an apocalyptic number.

It is an amenable number.

11725225 is a deficient number, since it is larger than the sum of its proper divisors (2814085).

11725225 is an equidigital number, since it uses as much as digits as its factorization.

11725225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469019 (or 469014 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 11725225 is about 3424.2115880886. The cubic root of 11725225 is about 227.1819005556.

Adding to 11725225 its reverse (52252711), we get a palindrome (63977936).

The spelling of 11725225 in words is "eleven million, seven hundred twenty-five thousand, two hundred twenty-five".

Divisors: 1 5 25 469009 2345045 11725225