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255302125 = 5313157109
BaseRepresentation
bin11110011011110…
…01100111101101
3122210101200200021
433031321213231
51010324132000
641200002141
76220014031
oct1715714755
9583350607
10255302125
111211252a1
1271600351
1340b7ab60
1425c9a1c1
151763011a
hexf3799ed

255302125 has 16 divisors (see below), whose sum is σ = 343128240. Its totient is φ = 188529600.

The previous prime is 255302123. The next prime is 255302161. The reversal of 255302125 is 521203552.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 198781801 + 56520324 = 14099^2 + 7518^2 .

It is not a de Polignac number, because 255302125 - 21 = 255302123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 255302125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255302123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76930 + ... + 80179.

It is an arithmetic number, because the mean of its divisors is an integer number (21445515).

Almost surely, 2255302125 is an apocalyptic number.

255302125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255302125 is a deficient number, since it is larger than the sum of its proper divisors (87826115).

255302125 is a wasteful number, since it uses less digits than its factorization.

255302125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157137 (or 157127 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 255302125 is about 15978.1765229954. The cubic root of 255302125 is about 634.3829126145.

Adding to 255302125 its reverse (521203552), we get a palindrome (776505677).

The spelling of 255302125 in words is "two hundred fifty-five million, three hundred two thousand, one hundred twenty-five".

Divisors: 1 5 13 25 65 125 325 1625 157109 785545 2042417 3927725 10212085 19638625 51060425 255302125