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256532525 = 5210261301
BaseRepresentation
bin11110100101001…
…10000000101101
3122212201012110122
433102212000231
51011133020100
641242214325
76233330144
oct1722460055
9585635418
10256532525
11121895757
1271ab43a5
13411bbbc2
14260da75b
15177c4985
hexf4a602d

256532525 has 6 divisors (see below), whose sum is σ = 318100362. Its totient is φ = 205226000.

The previous prime is 256532519. The next prime is 256532537. The reversal of 256532525 is 525235652.

It can be written as a sum of positive squares in 3 ways, for example, as 35772361 + 220760164 = 5981^2 + 14858^2 .

It is not a de Polignac number, because 256532525 - 26 = 256532461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5130626 + ... + 5130675.

It is an arithmetic number, because the mean of its divisors is an integer number (53016727).

Almost surely, 2256532525 is an apocalyptic number.

256532525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256532525 is a deficient number, since it is larger than the sum of its proper divisors (61567837).

256532525 is a wasteful number, since it uses less digits than its factorization.

256532525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261311 (or 10261306 counting only the distinct ones).

The product of its digits is 90000, while the sum is 35.

The square root of 256532525 is about 16016.6327609769. The cubic root of 256532525 is about 635.4003922853.

The spelling of 256532525 in words is "two hundred fifty-six million, five hundred thirty-two thousand, five hundred twenty-five".

Divisors: 1 5 25 10261301 51306505 256532525