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115144825 = 5217215937
BaseRepresentation
bin1101101110011…
…11100001111001
322000122222000011
412313033201321
5213434113300
615231541521
72565500125
oct667174171
9260588004
10115144825
1159aa6014
123268a8a1
131ab17043
1411414585
15a196eba
hex6dcf879

115144825 has 18 divisors (see below), whose sum is σ = 151681946. Its totient is φ = 86691840.

The previous prime is 115144811. The next prime is 115144829. The reversal of 115144825 is 528441511.

It can be written as a sum of positive squares in 9 ways, for example, as 2105401 + 113039424 = 1451^2 + 10632^2 .

It is not a de Polignac number, because 115144825 - 213 = 115136633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115144829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 744 + ... + 15193.

Almost surely, 2115144825 is an apocalyptic number.

It is an amenable number.

115144825 is a deficient number, since it is larger than the sum of its proper divisors (36537121).

115144825 is a wasteful number, since it uses less digits than its factorization.

115144825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15981 (or 15959 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 115144825 is about 10730.5556706072. Note that the first 3 decimals coincide. The cubic root of 115144825 is about 486.4984654131.

The spelling of 115144825 in words is "one hundred fifteen million, one hundred forty-four thousand, eight hundred twenty-five".

Divisors: 1 5 17 25 85 289 425 1445 7225 15937 79685 270929 398425 1354645 4605793 6773225 23028965 115144825