15532445225 has 48 divisors (see below), whose sum is σ = 21216142080. Its totient is φ = 11186683200.

The previous prime is 15532445221. The next prime is 15532445239. The reversal of 15532445225 is 52254423551.

It is not a de Polignac number, because 15532445225 - 2² = 15532445221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15532445221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18781262 + ... + 18782088.

It is an arithmetic number, because the mean of its divisors is an integer number (442002960).

Almost surely, 2^15532445225 is an apocalyptic number.

It is an amenable number.

15532445225 is a deficient number, since it is larger than the sum of its proper divisors (5683696855).

15532445225 is a wasteful number, since it uses less digits than its factorization.

15532445225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430 (or 1425 counting only the distinct ones).

The product of its digits is 240000, while the sum is 38.

Adding to 15532445225 its reverse (52254423551), we get a palindrome (67786868776).

The spelling of 15532445225 in words is "fifteen billion, five hundred thirty-two million, four hundred forty-five thousand, two hundred twenty-five".