22250001 has 8 divisors (see below), whose sum is σ = 29863744. Its totient is φ = 14734800.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22250001 is 10005222.

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

It is not a de Polignac number, because 22250001 - 2¹⁰ = 22248977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22250101) 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, 24106 + ... + 25011.

It is an arithmetic number, because the mean of its divisors is an integer number (3732968).

Almost surely, 2^22250001 is an apocalyptic number.

It is an amenable number.

22250001 is a deficient number, since it is larger than the sum of its proper divisors (7613743).

22250001 is a wasteful number, since it uses less digits than its factorization.

22250001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49271.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 22250001 is about 4716.9906720281. The cubic root of 22250001 is about 281.2613206307.

Adding to 22250001 its reverse (10005222), we get a palindrome (32255223).

The spelling of 22250001 in words is "twenty-two million, two hundred fifty thousand, one".