22125501 has 8 divisors (see below), whose sum is σ = 32778560. Its totient is φ = 14750316.

The previous prime is 22125479. The next prime is 22125503. The reversal of 22125501 is 10552122.

It is not a de Polignac number, because 22125501 - 2⁵ = 22125469 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 (22125503) 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, 409705 + ... + 409758.

It is an arithmetic number, because the mean of its divisors is an integer number (4097320).

Almost surely, 2^22125501 is an apocalyptic number.

It is an amenable number.

22125501 is a deficient number, since it is larger than the sum of its proper divisors (10653059).

22125501 is an equidigital number, since it uses as much as digits as its factorization.

22125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819472 (or 819466 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 22125501 is about 4703.7751859544. The cubic root of 22125501 is about 280.7357393678.

Adding to 22125501 its reverse (10552122), we get a palindrome (32677623).

The spelling of 22125501 in words is "twenty-two million, one hundred twenty-five thousand, five hundred one".