15297225 has 24 divisors (see below), whose sum is σ = 25727520. Its totient is φ = 8017920.

The previous prime is 15297221. The next prime is 15297241. The reversal of 15297225 is 52279251.

It is a happy number.

It is not a de Polignac number, because 15297225 - 2² = 15297221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15297221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2697 + ... + 6153.

It is an arithmetic number, because the mean of its divisors is an integer number (1071980).

Almost surely, 2^15297225 is an apocalyptic number.

15297225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15297225 is a deficient number, since it is larger than the sum of its proper divisors (10430295).

15297225 is a wasteful number, since it uses less digits than its factorization.

15297225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529 (or 3524 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 15297225 is about 3911.1667057286. The cubic root of 15297225 is about 248.2394983028.

The spelling of 15297225 in words is "fifteen million, two hundred ninety-seven thousand, two hundred twenty-five".