15237225 has 36 divisors (see below), whose sum is σ = 27502332. Its totient is φ = 8064000.

The previous prime is 15237197. The next prime is 15237227. The reversal of 15237225 is 52273251.

It can be written as a sum of positive squares in 6 ways, for example, as 97344 + 15139881 = 312^2 + 3891^2 .

It is not a de Polignac number, because 15237225 - 2⁶ = 15237161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15237227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54085 + ... + 54365.

Almost surely, 2^15237225 is an apocalyptic number.

15237225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15237225 is a deficient number, since it is larger than the sum of its proper divisors (12265107).

15237225 is a wasteful number, since it uses less digits than its factorization.

15237225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 530 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 15237225 is about 3903.4888241162. The cubic root of 15237225 is about 247.9145181024.

The spelling of 15237225 in words is "fifteen million, two hundred thirty-seven thousand, two hundred twenty-five".