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25990 = 2523113
BaseRepresentation
bin110010110000110
31022122121
412112012
51312430
6320154
7135526
oct62606
938577
1025990
1118588
121305a
13baa3
149686
157a7a
hex6586

25990 has 16 divisors (see below), whose sum is σ = 49248. Its totient is φ = 9856.

The previous prime is 25981. The next prime is 25997. The reversal of 25990 is 9952.

25990 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

25990 is an undulating number in base 15.

25990 is strictly pandigital in base 6.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174 + ... + 286.

It is an arithmetic number, because the mean of its divisors is an integer number (3078).

225990 is an apocalyptic number.

25990 is a deficient number, since it is larger than the sum of its proper divisors (23258).

25990 is a wasteful number, since it uses less digits than its factorization.

25990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 25990 is about 161.2141433001. The cubic root of 25990 is about 29.6211621252.

The spelling of 25990 in words is "twenty-five thousand, nine hundred ninety".

Divisors: 1 2 5 10 23 46 113 115 226 230 565 1130 2599 5198 12995 25990