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2501250030 = 238567569
BaseRepresentation
bin1001010100010110…
…0000101111101110
320110022112200000000
42111011200233232
520110310000110
61052110245130
7115661163066
oct22505405756
96408480000
102501250030
111073988194
125997b67a6
1330b279406
1419a2983a6
15e98c61c0
hex95160bee

2501250030 has 144 divisors (see below), whose sum is σ = 6865868880. Its totient is φ = 655890048.

The previous prime is 2501249999. The next prime is 2501250091. The reversal of 2501250030 is 300521052.

It is a happy number.

2501250030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2501249985 and 2501250012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4395586 + ... + 4396154.

It is an arithmetic number, because the mean of its divisors is an integer number (47679645).

Almost surely, 22501250030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2501250030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3432934440).

2501250030 is an abundant number, since it is smaller than the sum of its proper divisors (4364618850).

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

2501250030 is an frugal number, since it uses more digits than its factorization.

2501250030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2501250030 is about 50012.4987378155. The cubic root of 2501250030 is about 1357.4349775028.

Adding to 2501250030 its reverse (300521052), we get a palindrome (2801771082).

The spelling of 2501250030 in words is "two billion, five hundred one million, two hundred fifty thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 67 81 90 134 135 162 201 243 270 335 402 405 486 569 603 670 729 810 1005 1138 1206 1215 1458 1707 1809 2010 2187 2430 2845 3015 3414 3618 3645 4374 5121 5427 5690 6030 6561 7290 8535 9045 10242 10854 10935 13122 15363 16281 17070 18090 21870 25605 27135 30726 32562 32805 38123 46089 48843 51210 54270 65610 76246 76815 81405 92178 97686 114369 138267 146529 153630 162810 190615 228738 230445 244215 276534 293058 343107 381230 414801 439587 460890 488430 571845 686214 691335 732645 829602 879174 1029321 1143690 1244403 1382670 1465290 1715535 2058642 2074005 2197935 2488806 3087963 3431070 3733209 4148010 4395870 5146605 6175926 6222015 7466418 9263889 10293210 12444030 15439815 18527778 18666045 27791667 30879630 37332090 46319445 55583334 83375001 92638890 138958335 166750002 250125003 277916670 416875005 500250006 833750010 1250625015 2501250030