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180408225 = 3522405443
BaseRepresentation
bin10101100000011…
…00111110100001
3110120110200120010
422300030332201
5332141030400
625522435133
74320305334
oct1260147641
9416420503
10180408225
1192921408
1250502aa9
132b4b793a
1419d6261b
1510c89450
hexac0cfa1

180408225 has 12 divisors (see below), whose sum is σ = 298275056. Its totient is φ = 96217680.

The previous prime is 180408197. The next prime is 180408227. The reversal of 180408225 is 522804081.

It is a de Polignac number, because none of the positive numbers 2k-180408225 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 180408192 and 180408201.

It is not an unprimeable number, because it can be changed into a prime (180408227) 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 11 ways as a sum of consecutive naturals, for example, 1202647 + ... + 1202796.

Almost surely, 2180408225 is an apocalyptic number.

180408225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

180408225 is a deficient number, since it is larger than the sum of its proper divisors (117866831).

180408225 is a wasteful number, since it uses less digits than its factorization.

180408225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405456 (or 2405451 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 180408225 is about 13431.6128964469. The cubic root of 180408225 is about 565.0481333155.

The spelling of 180408225 in words is "one hundred eighty million, four hundred eight thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 2405443 7216329 12027215 36081645 60136075 180408225