100625609 has 8 divisors (see below), whose sum is σ = 116576640. Its totient is φ = 85068576.

The previous prime is 100625599. The next prime is 100625611. The reversal of 100625609 is 906526001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100625609 - 2²⁰ = 99577033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100625309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97949 + ... + 98970.

It is an arithmetic number, because the mean of its divisors is an integer number (14572080).

Almost surely, 2^100625609 is an apocalyptic number.

It is an amenable number.

100625609 is a deficient number, since it is larger than the sum of its proper divisors (15951031).

100625609 is an equidigital number, since it uses as much as digits as its factorization.

100625609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196999.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 100625609 is about 10031.2316791110. The cubic root of 100625609 is about 465.1248117575.

The spelling of 100625609 in words is "one hundred million, six hundred twenty-five thousand, six hundred nine".