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25380286 = 217746479
BaseRepresentation
bin110000011010…
…0010110111110
31202202110012121
41200310112332
522444132121
62303553154
7425505001
oct140642676
952673177
1025380286
1113365648
1285bb7ba
135348329
143529538
152365141
hex18345be

25380286 has 8 divisors (see below), whose sum is σ = 40309920. Its totient is φ = 11943648.

The previous prime is 25380283. The next prime is 25380287. The reversal of 25380286 is 68208352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 746479 = 25380286 / (2 + 5 + 3 + 8 + 0 + 2 + 8 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25380283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 373206 + ... + 373273.

It is an arithmetic number, because the mean of its divisors is an integer number (5038740).

Almost surely, 225380286 is an apocalyptic number.

25380286 is a deficient number, since it is larger than the sum of its proper divisors (14929634).

25380286 is a wasteful number, since it uses less digits than its factorization.

25380286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746498.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25380286 is about 5037.8850721310. The cubic root of 25380286 is about 293.8769364782.

The spelling of 25380286 in words is "twenty-five million, three hundred eighty thousand, two hundred eighty-six".

Divisors: 1 2 17 34 746479 1492958 12690143 25380286