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255100025 = 5217415861
BaseRepresentation
bin11110011010010…
…00010001111001
3122210000102110002
433031020101321
51010301200100
641151402345
76215212565
oct1715102171
9583012402
10255100025
11120aa7474
12715233b5
1340b09b7b
1425c466a5
15175e02d5
hexf348479

255100025 has 12 divisors (see below), whose sum is σ = 316559724. Its totient is φ = 203928000.

The previous prime is 255100007. The next prime is 255100031. The reversal of 255100025 is 520001552.

255100025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 67848169 + 187251856 = 8237^2 + 13684^2 .

It is not a de Polignac number, because 255100025 - 210 = 255099001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40595 + ... + 46455.

It is an arithmetic number, because the mean of its divisors is an integer number (26379977).

Almost surely, 2255100025 is an apocalyptic number.

255100025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255100025 is a deficient number, since it is larger than the sum of its proper divisors (61459699).

255100025 is a wasteful number, since it uses less digits than its factorization.

255100025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612 (or 7607 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 255100025 is about 15971.8510198411. The cubic root of 255100025 is about 634.2154735695.

Adding to 255100025 its reverse (520001552), we get a palindrome (775101577).

The spelling of 255100025 in words is "two hundred fifty-five million, one hundred thousand, twenty-five".

Divisors: 1 5 25 1741 5861 8705 29305 43525 146525 10204001 51020005 255100025