15345225 has 36 divisors (see below), whose sum is σ = 31414656. Its totient is φ = 7014240.

The previous prime is 15345199. The next prime is 15345227. The reversal of 15345225 is 52254351.

It is a happy number.

It is not a de Polignac number, because 15345225 - 2⁷ = 15345097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15345227) 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 35 ways as a sum of consecutive naturals, for example, 3297 + ... + 6446.

Almost surely, 2^15345225 is an apocalyptic number.

15345225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15345225 is an abundant number, since it is smaller than the sum of its proper divisors (16069431).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15345225 is a wasteful number, since it uses less digits than its factorization.

15345225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766 (or 9758 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 15345225 is about 3917.2981760392. The cubic root of 15345225 is about 248.4988711561.

Adding to 15345225 its reverse (52254351), we get a palindrome (67599576).

The spelling of 15345225 in words is "fifteen million, three hundred forty-five thousand, two hundred twenty-five".