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15000225 = 352200003
BaseRepresentation
bin111001001110…
…001010100001
31001020002102220
4321032022201
512320001400
61253301253
7241333302
oct71161241
931202386
1015000225
118515989
125034829
133152796
141dc67a9
1514b47a0
hexe4e2a1

15000225 has 12 divisors (see below), whose sum is σ = 24800496. Its totient is φ = 8000080.

The previous prime is 15000211. The next prime is 15000233. The reversal of 15000225 is 52200051.

It is not a de Polignac number, because 15000225 - 28 = 14999969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

15000225 is a modest number, since divided by 225 gives 150 as remainder.

It is an unprimeable number.

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, 99927 + ... + 100076.

It is an arithmetic number, because the mean of its divisors is an integer number (2066708).

Almost surely, 215000225 is an apocalyptic number.

15000225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15000225 is a deficient number, since it is larger than the sum of its proper divisors (9800271).

15000225 is a wasteful number, since it uses less digits than its factorization.

15000225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200016 (or 200011 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 15000225 is about 3873.0123934736. The cubic root of 15000225 is about 246.6224405329.

Adding to 15000225 its reverse (52200051), we get a palindrome (67200276).

It can be divided in two parts, 15000 and 225, that multiplied together give a cube (3375000 = 1503).

The spelling of 15000225 in words is "fifteen million, two hundred twenty-five", and thus it is an aban number.

Divisors: 1 3 5 15 25 75 200003 600009 1000015 3000045 5000075 15000225