15225235 has 4 divisors (see below), whose sum is σ = 18270288. Its totient is φ = 12180184.

The previous prime is 15225233. The next prime is 15225239. The reversal of 15225235 is 53252251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53252251 = 13 ⋅4096327.

It is a cyclic number.

It is not a de Polignac number, because 15225235 - 2¹ = 15225233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15225233) 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, 1522519 + ... + 1522528.

It is an arithmetic number, because the mean of its divisors is an integer number (4567572).

Almost surely, 2^15225235 is an apocalyptic number.

15225235 is a deficient number, since it is larger than the sum of its proper divisors (3045053).

15225235 is an equidigital number, since it uses as much as digits as its factorization.

15225235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045052.

The product of its digits is 3000, while the sum is 25.

The square root of 15225235 is about 3901.9527162691. The cubic root of 15225235 is about 247.8494739952.

Adding to 15225235 its reverse (53252251), we get a palindrome (68477486).

The spelling of 15225235 in words is "fifteen million, two hundred twenty-five thousand, two hundred thirty-five".