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253210025 = 5212797919
BaseRepresentation
bin11110001011110…
…10110110101001
3122122110101212002
433011322312221
51004310210100
641043100345
76163151435
oct1705726651
9578411762
10253210025
1111aa26492
12709716b5
13405c7823
14258b39c5
151736a2d5
hexf17ada9

253210025 has 12 divisors (see below), whose sum is σ = 314265600. Its totient is φ = 202384080.

The previous prime is 253210003. The next prime is 253210051. The reversal of 253210025 is 520012352.

It is not a de Polignac number, because 253210025 - 26 = 253209961 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253209979 and 253210006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28016 + ... + 35934.

It is an arithmetic number, because the mean of its divisors is an integer number (26188800).

Almost surely, 2253210025 is an apocalyptic number.

253210025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253210025 is a deficient number, since it is larger than the sum of its proper divisors (61055575).

253210025 is a wasteful number, since it uses less digits than its factorization.

253210025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208 (or 9203 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 253210025 is about 15912.5744303051. The cubic root of 253210025 is about 632.6453185658.

Adding to 253210025 its reverse (520012352), we get a palindrome (773222377).

The spelling of 253210025 in words is "two hundred fifty-three million, two hundred ten thousand, twenty-five".

Divisors: 1 5 25 1279 6395 7919 31975 39595 197975 10128401 50642005 253210025