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268396025 = 5240926249
BaseRepresentation
bin11111111111101…
…10010111111001
3200201000221010112
433333312113321
51022202133100
642344354105
76436220462
oct1777662771
9621027115
10268396025
111285589a7
1275a75935
13437b3a21
1427907d69
1518869b35
hexfff65f9

268396025 has 12 divisors (see below), whose sum is σ = 333637500. Its totient is φ = 214183680.

The previous prime is 268396019. The next prime is 268396027. The reversal of 268396025 is 520693862.

It can be written as a sum of positive squares in 6 ways, for example, as 15808576 + 252587449 = 3976^2 + 15893^2 .

It is not a de Polignac number, because 268396025 - 218 = 268133881 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (268396027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2900 + ... + 23349.

It is an arithmetic number, because the mean of its divisors is an integer number (27803125).

Almost surely, 2268396025 is an apocalyptic number.

268396025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

268396025 is a deficient number, since it is larger than the sum of its proper divisors (65241475).

268396025 is a wasteful number, since it uses less digits than its factorization.

268396025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26668 (or 26663 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 268396025 is about 16382.7966171835. The cubic root of 268396025 is about 645.0479903399.

The spelling of 268396025 in words is "two hundred sixty-eight million, three hundred ninety-six thousand, twenty-five".

Divisors: 1 5 25 409 2045 10225 26249 131245 656225 10735841 53679205 268396025