15225622 has 8 divisors (see below), whose sum is σ = 22894200. Its totient is φ = 7594224.

The previous prime is 15225607. The next prime is 15225629. The reversal of 15225622 is 22652251.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8247 + ... + 9922.

It is an arithmetic number, because the mean of its divisors is an integer number (2861775).

Almost surely, 2^15225622 is an apocalyptic number.

15225622 is a deficient number, since it is larger than the sum of its proper divisors (7668578).

15225622 is a wasteful number, since it uses less digits than its factorization.

15225622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18590.

The product of its digits is 2400, while the sum is 25.

The square root of 15225622 is about 3902.0023065088. The cubic root of 15225622 is about 247.8515739504.

Adding to 15225622 its reverse (22652251), we get a palindrome (37877873).

The spelling of 15225622 in words is "fifteen million, two hundred twenty-five thousand, six hundred twenty-two".