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263231025 = 35210913217
BaseRepresentation
bin11111011000010…
…01011000110001
3200100022112002020
433230021120301
51014341343100
642041542053
76344266251
oct1754113061
9610275066
10263231025
11125650402
12741a4929
13426c5b05
1426d61961
15181995a0
hexfb09631

263231025 has 24 divisors (see below), whose sum is σ = 435742944. Its totient is φ = 140217600.

The previous prime is 263230991. The next prime is 263231063. The reversal of 263231025 is 520132362.

263231025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 263231025 - 27 = 263230897 is a prime.

It is a super-5 number, since 5×2632310255 (a number of 43 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 263230986 and 263231004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80217 + ... + 83433.

It is an arithmetic number, because the mean of its divisors is an integer number (18155956).

Almost surely, 2263231025 is an apocalyptic number.

263231025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263231025 is a deficient number, since it is larger than the sum of its proper divisors (172511919).

263231025 is a wasteful number, since it uses less digits than its factorization.

263231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321 (or 4316 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 263231025 is about 16224.3959825936. The cubic root of 263231025 is about 640.8834032715.

Adding to 263231025 its reverse (520132362), we get a palindrome (783363387).

The spelling of 263231025 in words is "two hundred sixty-three million, two hundred thirty-one thousand, twenty-five".

Divisors: 1 3 5 15 25 75 1091 3217 3273 5455 9651 16085 16365 27275 48255 80425 81825 241275 3509747 10529241 17548735 52646205 87743675 263231025