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25145055 = 3251353811
BaseRepresentation
bin101111111101…
…0111011011111
31202022111112100
41133322323133
522414120210
62254540143
7423505125
oct137727337
952274470
1025145055
1113214941
128507653
135295240
1434a7915
15231a5c0
hex17faedf

25145055 has 48 divisors (see below), whose sum is σ = 47882016. Its totient is φ = 12130560.

The previous prime is 25145053. The next prime is 25145129. The reversal of 25145055 is 55054152.

It is not a de Polignac number, because 25145055 - 21 = 25145053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25145051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30600 + ... + 31410.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 225145055 is an apocalyptic number.

25145055 is a deficient number, since it is larger than the sum of its proper divisors (22736961).

25145055 is a wasteful number, since it uses less digits than its factorization.

25145055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 25145055 is about 5014.4845198684. The cubic root of 25145055 is about 292.9662080953.

It can be divided in two parts, 2514 and 5055, that added together give a square (7569 = 872).

The spelling of 25145055 in words is "twenty-five million, one hundred forty-five thousand, fifty-five".

Divisors: 1 3 5 9 13 15 39 45 53 65 117 159 195 265 477 585 689 795 811 2067 2385 2433 3445 4055 6201 7299 10335 10543 12165 31005 31629 36495 42983 52715 94887 128949 158145 214915 386847 474435 558779 644745 1676337 1934235 2793895 5029011 8381685 25145055