1215004313225 has 12 divisors (see below), whose sum is σ = 1506779971740. Its totient is φ = 971890790400.

The previous prime is 1215004313209. The next prime is 1215004313231. The reversal of 1215004313225 is 5223134005121.

It can be written as a sum of positive squares in 6 ways, for example, as 303019422784 + 911984890441 = 550472^2 + 954979^2 .

It is not a de Polignac number, because 1215004313225 - 2⁴ = 1215004313209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2596160 + ... + 3028209.

It is an arithmetic number, because the mean of its divisors is an integer number (125564997645).

Almost surely, 2^{1215004313225} is an apocalyptic number.

It is an amenable number.

1215004313225 is a deficient number, since it is larger than the sum of its proper divisors (291775658515).

1215004313225 is an equidigital number, since it uses as much as digits as its factorization.

1215004313225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633020 (or 5633015 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1215004313225 its reverse (5223134005121), we get a palindrome (6438138318346).

The spelling of 1215004313225 in words is "one trillion, two hundred fifteen billion, four million, three hundred thirteen thousand, two hundred twenty-five".