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2105033125 = 54135092
BaseRepresentation
bin111110101111000…
…0100000110100101
312102200222202120211
41331132010012211
513302342030000
6544514055421
7103110325546
oct17536040645
95380882524
102105033125
119902665a8
124a8b7a571
13277160a40
1415d7da4cd
15c4c0d7ba
hex7d7841a5

2105033125 has 30 divisors (see below), whose sum is σ = 2838367994. Its totient is φ = 1551432000.

The previous prime is 2105033113. The next prime is 2105033129. The reversal of 2105033125 is 5213305012.

It can be written as a sum of positive squares in 15 ways, for example, as 1974113761 + 130919364 = 44431^2 + 11442^2 .

It is not a de Polignac number, because 2105033125 - 29 = 2105032613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105033096 and 2105033105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105033129) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4135371 + ... + 4135879.

Almost surely, 22105033125 is an apocalyptic number.

2105033125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2105033125 is a deficient number, since it is larger than the sum of its proper divisors (733334869).

2105033125 is an frugal number, since it uses more digits than its factorization.

2105033125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2105033125 is about 45880.6399802793. The cubic root of 2105033125 is about 1281.6014146124.

Adding to 2105033125 its reverse (5213305012), we get a palindrome (7318338137).

The spelling of 2105033125 in words is "two billion, one hundred five million, thirty-three thousand, one hundred twenty-five".

Divisors: 1 5 13 25 65 125 325 509 625 1625 2545 6617 8125 12725 33085 63625 165425 259081 318125 827125 1295405 3368053 4135625 6477025 16840265 32385125 84201325 161925625 421006625 2105033125