22625001 has 48 divisors (see below), whose sum is σ = 39696384. Its totient is φ = 12608784.

The previous prime is 22624997. The next prime is 22625003. The reversal of 22625001 is 10052622.

It is not a de Polignac number, because 22625001 - 2² = 22624997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22625003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79806 + ... + 80088.

It is an arithmetic number, because the mean of its divisors is an integer number (827008).

Almost surely, 2^22625001 is an apocalyptic number.

22625001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22625001 is a deficient number, since it is larger than the sum of its proper divisors (17071383).

22625001 is an equidigital number, since it uses as much as digits as its factorization.

22625001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22625001 is about 4756.5745027278. The cubic root of 22625001 is about 282.8326454581.

Adding to 22625001 its reverse (10052622), we get a palindrome (32677623).

The spelling of 22625001 in words is "twenty-two million, six hundred twenty-five thousand, one".