15573404225 has 12 divisors (see below), whose sum is σ = 19317749820. Its totient is φ = 12454382400.

The previous prime is 15573404219. The next prime is 15573404227. The reversal of 15573404225 is 52240437551.

It can be written as a sum of positive squares in 6 ways, for example, as 95804944 + 15477599281 = 9788^2 + 124409^2 .

It is not a de Polignac number, because 15573404225 - 2⁸ = 15573403969 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (15573404227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34346 + ... + 179795.

It is an arithmetic number, because the mean of its divisors is an integer number (1609812485).

Almost surely, 2^15573404225 is an apocalyptic number.

It is an amenable number.

15573404225 is a deficient number, since it is larger than the sum of its proper divisors (3744345595).

15573404225 is a wasteful number, since it uses less digits than its factorization.

15573404225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217060 (or 217055 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The spelling of 15573404225 in words is "fifteen billion, five hundred seventy-three million, four hundred four thousand, two hundred twenty-five".