100425643 has 2 divisors, whose sum is σ = 100425644. Its totient is φ = 100425642.

The previous prime is 100425629. The next prime is 100425653. The reversal of 100425643 is 346524001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100425643 - 2²¹ = 98328491 is a prime.

It is not a weakly prime, because it can be changed into another prime (100425653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50212821 + 50212822.

It is an arithmetic number, because the mean of its divisors is an integer number (50212822).

Almost surely, 2^100425643 is an apocalyptic number.

100425643 is a deficient number, since it is larger than the sum of its proper divisors (1).

100425643 is an equidigital number, since it uses as much as digits as its factorization.

100425643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 100425643 is about 10021.2595515733. The cubic root of 100425643 is about 464.8165044678.

Adding to 100425643 its reverse (346524001), we get a palindrome (446949644).

The spelling of 100425643 in words is "one hundred million, four hundred twenty-five thousand, six hundred forty-three".