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25238080 = 265719593
BaseRepresentation
bin110000001000…
…1101001000000
31202111020010201
41200101221000
522430104310
62300534544
7424343260
oct140215100
952436121
1025238080
111327881a
128551454
1352c869a
1434cd7a0
152337e3a
hex1811a40

25238080 has 112 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 8183808.

The previous prime is 25238077. The next prime is 25238089. The reversal of 25238080 is 8083252.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (25238089) 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 15 ways as a sum of consecutive naturals, for example, 42264 + ... + 42856.

Almost surely, 225238080 is an apocalyptic number.

25238080 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 25238080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36210240).

25238080 is an abundant number, since it is smaller than the sum of its proper divisors (47182400).

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

25238080 is a wasteful number, since it uses less digits than its factorization.

25238080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25238080 is about 5023.7515862152. The cubic root of 25238080 is about 293.3270430240.

The spelling of 25238080 in words is "twenty-five million, two hundred thirty-eight thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 19 20 28 32 35 38 40 56 64 70 76 80 95 112 133 140 152 160 190 224 266 280 304 320 380 448 532 560 593 608 665 760 1064 1120 1186 1216 1330 1520 2128 2240 2372 2660 2965 3040 4151 4256 4744 5320 5930 6080 8302 8512 9488 10640 11267 11860 16604 18976 20755 21280 22534 23720 33208 37952 41510 42560 45068 47440 56335 66416 78869 83020 90136 94880 112670 132832 157738 166040 180272 189760 225340 265664 315476 332080 360544 394345 450680 630952 664160 721088 788690 901360 1261904 1328320 1577380 1802720 2523808 3154760 3605440 5047616 6309520 12619040 25238080