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25768 = 233221
BaseRepresentation
bin110010010101000
31022100101
412102220
51311033
6315144
7135061
oct62250
938311
1025768
11183a6
1212ab4
13b962
149568
15797d
hex64a8

25768 has 8 divisors (see below), whose sum is σ = 48330. Its totient is φ = 12880.

The previous prime is 25763. The next prime is 25771. The reversal of 25768 is 86752.

It can be written as a sum of positive squares in only one way, i.e., 19044 + 6724 = 138^2 + 82^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603 + ... + 1618.

225768 is an apocalyptic number.

It is an amenable number.

25768 is a deficient number, since it is larger than the sum of its proper divisors (22562).

25768 is a wasteful number, since it uses less digits than its factorization.

25768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227 (or 3223 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 25768 is about 160.5241414866. The cubic root of 25768 is about 29.5365820229.

It can be divided in two parts, 257 and 68, that added together give a triangular number (325 = T25).

The spelling of 25768 in words is "twenty-five thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 3221 6442 12884 25768