100425109 has 2 divisors, whose sum is σ = 100425110. Its totient is φ = 100425108.

The previous prime is 100425077. The next prime is 100425179. The reversal of 100425109 is 901524001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94770225 + 5654884 = 9735^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 100425109 - 2⁵ = 100425077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100425109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100425179) 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 as a sum of consecutive naturals, namely, 50212554 + 50212555.

It is an arithmetic number, because the mean of its divisors is an integer number (50212555).

Almost surely, 2^100425109 is an apocalyptic number.

It is an amenable number.

100425109 is a deficient number, since it is larger than the sum of its proper divisors (1).

100425109 is an equidigital number, since it uses as much as digits as its factorization.

100425109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 100425109 is about 10021.2329081805. The cubic root of 100425109 is about 464.8156805997.

It can be divided in two parts, 10042 and 5109, that added together give a palindrome (15151).

The spelling of 100425109 in words is "one hundred million, four hundred twenty-five thousand, one hundred nine".