13155312521225 has 48 divisors (see below), whose sum is σ = 18775482696960. Its totient is φ = 8956718208000.

The previous prime is 13155312521213. The next prime is 13155312521227. The reversal of 13155312521225 is 52212521355131.

It is not a de Polignac number, because 13155312521225 - 2¹² = 13155312517129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13155312521227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55082669 + ... + 55320981.

It is an arithmetic number, because the mean of its divisors is an integer number (391155889520).

Almost surely, 2^{13155312521225} is an apocalyptic number.

It is an amenable number.

13155312521225 is a deficient number, since it is larger than the sum of its proper divisors (5620170175735).

13155312521225 is a wasteful number, since it uses less digits than its factorization.

13155312521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240570 (or 240565 counting only the distinct ones).

The product of its digits is 90000, while the sum is 38.

Adding to 13155312521225 its reverse (52212521355131), we get a palindrome (65367833876356).

The spelling of 13155312521225 in words is "thirteen trillion, one hundred fifty-five billion, three hundred twelve million, five hundred twenty-one thousand, two hundred twenty-five".