15562225 has 24 divisors (see below), whose sum is σ = 23355648. Its totient is φ = 10041600.

The previous prime is 15562223. The next prime is 15562243. The reversal of 15562225 is 52226551.

It is not a de Polignac number, because 15562225 - 2¹ = 15562223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15562193 and 15562202.

It is not an unprimeable number, because it can be changed into a prime (15562223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (973152).

Almost surely, 2^15562225 is an apocalyptic number.

It is an amenable number.

15562225 is a deficient number, since it is larger than the sum of its proper divisors (7793423).

15562225 is a wasteful number, since it uses less digits than its factorization.

15562225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265 (or 5260 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 15562225 is about 3944.8986045271. The cubic root of 15562225 is about 249.6647506324.

Adding to 15562225 its reverse (52226551), we get a palindrome (67788776).

The spelling of 15562225 in words is "fifteen million, five hundred sixty-two thousand, two hundred twenty-five".