100843425 has 18 divisors (see below), whose sum is σ = 180622182. Its totient is φ = 53783040.

The previous prime is 100843417. The next prime is 100843427. The reversal of 100843425 is 524348001.

It can be written as a sum of positive squares in 3 ways, for example, as 14130081 + 86713344 = 3759^2 + 9312^2 .

It is not a de Polignac number, because 100843425 - 2³ = 100843417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100843427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 223872 + ... + 224321.

Almost surely, 2^100843425 is an apocalyptic number.

100843425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100843425 is a deficient number, since it is larger than the sum of its proper divisors (79778757).

100843425 is a wasteful number, since it uses less digits than its factorization.

100843425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448209 (or 448201 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 100843425 is about 10042.0827023083. The cubic root of 100843425 is about 465.4601757351.

The spelling of 100843425 in words is "one hundred million, eight hundred forty-three thousand, four hundred twenty-five".