22125401 has 4 divisors (see below), whose sum is σ = 22209792. Its totient is φ = 22041012.

The previous prime is 22125377. The next prime is 22125403. The reversal of 22125401 is 10452122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22125401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22125401.

It is not an unprimeable number, because it can be changed into a prime (22125403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41801 + ... + 42326.

It is an arithmetic number, because the mean of its divisors is an integer number (5552448).

Almost surely, 2^22125401 is an apocalyptic number.

It is an amenable number.

22125401 is a deficient number, since it is larger than the sum of its proper divisors (84391).

22125401 is an equidigital number, since it uses as much as digits as its factorization.

22125401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84390.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 22125401 is about 4703.7645561826. The cubic root of 22125401 is about 280.7353164227.

Adding to 22125401 its reverse (10452122), we get a palindrome (32577523).

The spelling of 22125401 in words is "twenty-two million, one hundred twenty-five thousand, four hundred one".