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105045025 = 5223182687
BaseRepresentation
bin1100100001011…
…01110000100001
321022122211200111
412100231300201
5203342420100
614231251321
72413603501
oct620556041
9238584614
10105045025
1154327978
122b219b41
13189bbc27
14dd45a01
15934e6ba
hex642dc21

105045025 has 12 divisors (see below), whose sum is σ = 135919872. Its totient is φ = 80381840.

The previous prime is 105045007. The next prime is 105045037. The reversal of 105045025 is 520540501.

It is a de Polignac number, because none of the positive numbers 2k-105045025 is a prime.

It is a super-2 number, since 2×1050450252 = 22068914554501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105044987 and 105045005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90769 + ... + 91918.

It is an arithmetic number, because the mean of its divisors is an integer number (11326656).

Almost surely, 2105045025 is an apocalyptic number.

It is an amenable number.

105045025 is a deficient number, since it is larger than the sum of its proper divisors (30874847).

105045025 is a wasteful number, since it uses less digits than its factorization.

105045025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182720 (or 182715 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 105045025 is about 10249.1475255262. The cubic root of 105045025 is about 471.8368214656.

Adding to 105045025 its reverse (520540501), we get a palindrome (625585526).

The spelling of 105045025 in words is "one hundred five million, forty-five thousand, twenty-five".

Divisors: 1 5 23 25 115 575 182687 913435 4201801 4567175 21009005 105045025