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133025 = 5217313
BaseRepresentation
bin100000011110100001
320202110212
4200132201
513224100
62503505
71062554
oct403641
9222425
10133025
1190a42
1264b95
1348719
143669b
1529635
hex207a1

133025 has 12 divisors (see below), whose sum is σ = 175212. Its totient is φ = 99840.

The previous prime is 133013. The next prime is 133033. The reversal of 133025 is 520331.

It can be written as a sum of positive squares in 6 ways, for example, as 15376 + 117649 = 124^2 + 343^2 .

It is not a de Polignac number, because 133025 - 26 = 132961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (14601).

2133025 is an apocalyptic number.

It is an amenable number.

133025 is a deficient number, since it is larger than the sum of its proper divisors (42187).

133025 is a wasteful number, since it uses less digits than its factorization.

133025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 133025 is about 364.7259244967. The cubic root of 133025 is about 51.0478853083.

Adding to 133025 its reverse (520331), we get a palindrome (653356).

The spelling of 133025 in words is "one hundred thirty-three thousand, twenty-five".

Divisors: 1 5 17 25 85 313 425 1565 5321 7825 26605 133025