22125515 has 8 divisors (see below), whose sum is σ = 26604528. Its totient is φ = 17664480.

The previous prime is 22125511. The next prime is 22125541. The reversal of 22125515 is 51552122.

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

It is not a de Polignac number, because 22125515 - 2² = 22125511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125511) 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, 1616 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (3325566).

Almost surely, 2^22125515 is an apocalyptic number.

22125515 is a deficient number, since it is larger than the sum of its proper divisors (4479013).

22125515 is an equidigital number, since it uses as much as digits as its factorization.

22125515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989.

The product of its digits is 1000, while the sum is 23.

The square root of 22125515 is about 4703.7766741205. The cubic root of 22125515 is about 280.7357985800.

Adding to 22125515 its reverse (51552122), we get a palindrome (73677637).

The spelling of 22125515 in words is "twenty-two million, one hundred twenty-five thousand, five hundred fifteen".