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25300000 = 25551123
BaseRepresentation
bin110000010000…
…0110000100000
31202121101002001
41200200300200
522434100000
62302133344
7425021635
oct140406040
952541061
1025300000
11133102a0
128581254
13531a91b
14350818c
15234b46a
hex1820c20

25300000 has 144 divisors (see below), whose sum is σ = 70870464. Its totient is φ = 8800000.

The previous prime is 25299997. The next prime is 25300003. The reversal of 25300000 is 352.

Adding to 25300000 its reverse (352), we get a palindrome (25300352).

It is an interprime number because it is at equal distance from previous prime (25299997) and next prime (25300003).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 25300000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25300003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099989 + ... + 1100011.

It is an arithmetic number, because the mean of its divisors is an integer number (492156).

Almost surely, 225300000 is an apocalyptic number.

25300000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35435232).

25300000 is an abundant number, since it is smaller than the sum of its proper divisors (45570464).

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

25300000 is an equidigital number, since it uses as much as digits as its factorization.

25300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 25300000 is about 5029.9105359837. The cubic root of 25300000 is about 293.5667334304.

The spelling of 25300000 in words is "twenty-five million, three hundred thousand".

Divisors: 1 2 4 5 8 10 11 16 20 22 23 25 32 40 44 46 50 55 80 88 92 100 110 115 125 160 176 184 200 220 230 250 253 275 352 368 400 440 460 500 506 550 575 625 736 800 880 920 1000 1012 1100 1150 1250 1265 1375 1760 1840 2000 2024 2200 2300 2500 2530 2750 2875 3125 3680 4000 4048 4400 4600 5000 5060 5500 5750 6250 6325 6875 8096 8800 9200 10000 10120 11000 11500 12500 12650 13750 14375 18400 20000 20240 22000 23000 25000 25300 27500 28750 31625 34375 40480 44000 46000 50000 50600 55000 57500 63250 68750 71875 92000 100000 101200 110000 115000 126500 137500 143750 158125 202400 220000 230000 253000 275000 287500 316250 460000 506000 550000 575000 632500 790625 1012000 1100000 1150000 1265000 1581250 2300000 2530000 3162500 5060000 6325000 12650000 25300000