15235225 has 12 divisors (see below), whose sum is σ = 19062396. Its totient is φ = 12078080.

The previous prime is 15235219. The next prime is 15235249. The reversal of 15235225 is 52253251.

It is a happy number.

15235225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 512656 + 14722569 = 716^2 + 3837^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15235225 is a prime.

It is a super-2 number, since 2×15235225² = 464224161601250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15235225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129 + ... + 5521.

It is an arithmetic number, because the mean of its divisors is an integer number (1588533).

Almost surely, 2^15235225 is an apocalyptic number.

It is an amenable number.

15235225 is a deficient number, since it is larger than the sum of its proper divisors (3827171).

15235225 is a wasteful number, since it uses less digits than its factorization.

15235225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516 (or 5511 counting only the distinct ones).

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

The square root of 15235225 is about 3903.2326346248. The cubic root of 15235225 is about 247.9036707481.

Adding to 15235225 its reverse (52253251), we get a palindrome (67488476).

The spelling of 15235225 in words is "fifteen million, two hundred thirty-five thousand, two hundred twenty-five".