100625321 has 4 divisors (see below), whose sum is σ = 101181444. Its totient is φ = 100069200.

The previous prime is 100625309. The next prime is 100625333. The reversal of 100625321 is 123526001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123526001 = 73 ⋅1692137.

It is an interprime number because it is at equal distance from previous prime (100625309) and next prime (100625333).

It can be written as a sum of positive squares in 2 ways, for example, as 30250000 + 70375321 = 5500^2 + 8389^2 .

It is a cyclic number.

It is not a de Polignac number, because 100625321 - 2²² = 96431017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100625293 and 100625302.

It is not an unprimeable number, because it can be changed into a prime (100625351) 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 in 3 ways as a sum of consecutive naturals, for example, 277790 + ... + 278151.

It is an arithmetic number, because the mean of its divisors is an integer number (25295361).

Almost surely, 2^100625321 is an apocalyptic number.

It is an amenable number.

100625321 is a deficient number, since it is larger than the sum of its proper divisors (556123).

100625321 is an equidigital number, since it uses as much as digits as its factorization.

100625321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556122.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 100625321 is about 10031.2173239343. The cubic root of 100625321 is about 465.1243680133.

The spelling of 100625321 in words is "one hundred million, six hundred twenty-five thousand, three hundred twenty-one".