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25928 = 237463

25928 has 16 divisors (see below), whose sum is σ = 55680. Its totient is φ = 11088.

The previous prime is 25919. The next prime is 25931. The reversal of 25928 is 82952.

It is a super-2 number, since 2×259282 = 1344522368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 25897 and 25906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25928.

It is an unprimeable number.

25928 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 287.

It is an arithmetic number, because the mean of its divisors is an integer number (3480).

225928 is an apocalyptic number.

25928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25928 is an abundant number, since it is smaller than the sum of its proper divisors (29752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27840).

25928 is a wasteful number, since it uses less digits than its factorization.

25928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 472 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 25928 is about 161.0217376630. The cubic root of 25928 is about 29.5975892850.

It can be divided in two parts, 2592 and 8, that multiplied together give a 4-th power (20736 = 124).

The spelling of 25928 in words is "twenty-five thousand, nine hundred twenty-eight".

Divisors: 1 2 4 7 8 14 28 56 463 926 1852 3241 3704 6482 12964 25928