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25068780 = 223251121151
BaseRepresentation
bin101111110100…
…0010011101100
31202011121220100
41133220103230
522404200110
62253151100
7423036552
oct137502354
952147810
1025068780
1113172600
12848b490
1352695c9
143487bd2
152302bc0
hex17e84ec

25068780 has 108 divisors (see below), whose sum is σ = 83655936. Its totient is φ = 6072000.

The previous prime is 25068779. The next prime is 25068811. The reversal of 25068780 is 8786052.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21205 + ... + 22355.

It is an arithmetic number, because the mean of its divisors is an integer number (774592).

Almost surely, 225068780 is an apocalyptic number.

25068780 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 25068780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41827968).

25068780 is an abundant number, since it is smaller than the sum of its proper divisors (58587156).

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

25068780 is a wasteful number, since it uses less digits than its factorization.

25068780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 25068780 is about 5006.8732758080. The cubic root of 25068780 is about 292.6696802033.

The spelling of 25068780 in words is "twenty-five million, sixty-eight thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 121 132 165 180 198 220 242 330 363 396 484 495 605 660 726 990 1089 1151 1210 1452 1815 1980 2178 2302 2420 3453 3630 4356 4604 5445 5755 6906 7260 10359 10890 11510 12661 13812 17265 20718 21780 23020 25322 34530 37983 41436 50644 51795 63305 69060 75966 103590 113949 126610 139271 151932 189915 207180 227898 253220 278542 379830 417813 455796 557084 569745 696355 759660 835626 1139490 1253439 1392710 1671252 2089065 2278980 2506878 2785420 4178130 5013756 6267195 8356260 12534390 25068780