100512250409 has 2 divisors, whose sum is σ = 100512250410. Its totient is φ = 100512250408.

The previous prime is 100512250403. The next prime is 100512250451. The reversal of 100512250409 is 904052215001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95637418009 + 4874832400 = 309253^2 + 69820^2 .

It is a cyclic number.

It is not a de Polignac number, because 100512250409 - 2²⁸ = 100243814953 is a prime.

It is not a weakly prime, because it can be changed into another prime (100512250403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50256125204 + 50256125205.

It is an arithmetic number, because the mean of its divisors is an integer number (50256125205).

Almost surely, 2^100512250409 is an apocalyptic number.

It is an amenable number.

100512250409 is a deficient number, since it is larger than the sum of its proper divisors (1).

100512250409 is an equidigital number, since it uses as much as digits as its factorization.

100512250409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 100512250409 in words is "one hundred billion, five hundred twelve million, two hundred fifty thousand, four hundred nine".