15205225 has 48 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 9262080.

The previous prime is 15205217. The next prime is 15205237. The reversal of 15205225 is 52250251.

It is not a de Polignac number, because 15205225 - 2³ = 15205217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15205196 and 15205205.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56391 + ... + 56659.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^15205225 is an apocalyptic number.

It is an amenable number.

15205225 is a deficient number, since it is larger than the sum of its proper divisors (8900375).

15205225 is a wasteful number, since it uses less digits than its factorization.

15205225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 15205225 is about 3899.3877724586. The cubic root of 15205225 is about 247.7408463944.

Adding to 15205225 its reverse (52250251), we get a palindrome (67455476).

The spelling of 15205225 in words is "fifteen million, two hundred five thousand, two hundred twenty-five".