Search a number
-
+
2505142512 = 243313941719
BaseRepresentation
bin1001010101010001…
…0111000011110000
320110120212102111000
42111110113003300
520112304030022
61052325522000
7116036234325
oct22524270360
96416772430
102505142512
1110760a6714
1259ab73300
1330c010062
1419a9ccb4c
15e9de46ac
hex955170f0

2505142512 has 80 divisors (see below), whose sum is σ = 7242592000. Its totient is φ = 829020096.

The previous prime is 2505142511. The next prime is 2505142553. The reversal of 2505142512 is 2152415052.

2505142512 is a `hidden beast` number, since 2 + 5 + 0 + 5 + 142 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505142511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39189 + ... + 80907.

It is an arithmetic number, because the mean of its divisors is an integer number (90532400).

Almost surely, 22505142512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2505142512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3621296000).

2505142512 is an abundant number, since it is smaller than the sum of its proper divisors (4737449488).

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

2505142512 is a wasteful number, since it uses less digits than its factorization.

2505142512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41875 (or 41863 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2505142512 is about 50051.3987017346. The cubic root of 2505142512 is about 1358.1387659573.

Adding to 2505142512 its reverse (2152415052), we get a palindrome (4657557564).

It can be divided in two parts, 2505 and 142512, that multiplied together give a triangular number (356992560 = T26720).

The spelling of 2505142512 in words is "two billion, five hundred five million, one hundred forty-two thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 139 144 216 278 417 432 556 834 1112 1251 1668 2224 2502 3336 3753 5004 6672 7506 10008 15012 20016 30024 41719 60048 83438 125157 166876 250314 333752 375471 500628 667504 750942 1001256 1126413 1501884 2002512 2252826 3003768 4505652 5798941 6007536 9011304 11597882 17396823 18022608 23195764 34793646 46391528 52190469 69587292 92783056 104380938 139174584 156571407 208761876 278349168 313142814 417523752 626285628 835047504 1252571256 2505142512