108425221 has 4 divisors (see below), whose sum is σ = 109910572. Its totient is φ = 106939872.

The previous prime is 108425183. The next prime is 108425237. The reversal of 108425221 is 122524801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122524801 = 7 ⋅17503543.

It can be written as a sum of positive squares in 2 ways, for example, as 59074596 + 49350625 = 7686^2 + 7025^2 .

It is a cyclic number.

It is not a de Polignac number, because 108425221 - 2⁹ = 108424709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108425021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742566 + ... + 742711.

It is an arithmetic number, because the mean of its divisors is an integer number (27477643).

Almost surely, 2^108425221 is an apocalyptic number.

It is an amenable number.

108425221 is a deficient number, since it is larger than the sum of its proper divisors (1485351).

108425221 is an equidigital number, since it uses as much as digits as its factorization.

108425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485350.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 108425221 is about 10412.7432024419. The cubic root of 108425221 is about 476.8444936675.

The spelling of 108425221 in words is "one hundred eight million, four hundred twenty-five thousand, two hundred twenty-one".