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253025278 = 21121045559
BaseRepresentation
bin11110001010011…
…01101111111110
3122122010000102121
433011031233332
51004233302103
641035113154
76161452012
oct1705155776
9578100377
10253025278
1111a90a700
12708a27ba
13405616cc
1425866542
15173306bd
hexf14dbfe

253025278 has 12 divisors (see below), whose sum is σ = 417178440. Its totient is φ = 115011380.

The previous prime is 253025273. The next prime is 253025281. The reversal of 253025278 is 872520352.

253025278 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253025273) 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 5 ways as a sum of consecutive naturals, for example, 522538 + ... + 523021.

It is an arithmetic number, because the mean of its divisors is an integer number (34764870).

Almost surely, 2253025278 is an apocalyptic number.

253025278 is a deficient number, since it is larger than the sum of its proper divisors (164153162).

253025278 is a wasteful number, since it uses less digits than its factorization.

253025278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045583 (or 1045572 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 253025278 is about 15906.7683078619. The cubic root of 253025278 is about 632.4914176529.

The spelling of 253025278 in words is "two hundred fifty-three million, twenty-five thousand, two hundred seventy-eight".

Divisors: 1 2 11 22 121 242 1045559 2091118 11501149 23002298 126512639 253025278