1213410444225 has 24 divisors (see below), whose sum is σ = 2292767926080. Its totient is φ = 554701917120.

The previous prime is 1213410444223. The next prime is 1213410444247. The reversal of 1213410444225 is 5224440143121.

It is not a de Polignac number, because 1213410444225 - 2¹ = 1213410444223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213410444223) 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, 1155628470 + ... + 1155629519.

It is an arithmetic number, because the mean of its divisors is an integer number (95531996920).

Almost surely, 2^{1213410444225} is an apocalyptic number.

1213410444225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213410444225 is a deficient number, since it is larger than the sum of its proper divisors (1079357481855).

1213410444225 is a wasteful number, since it uses less digits than its factorization.

1213410444225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311258009 (or 2311258004 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 1213410444225 its reverse (5224440143121), we get a palindrome (6437850587346).

The spelling of 1213410444225 in words is "one trillion, two hundred thirteen billion, four hundred ten million, four hundred forty-four thousand, two hundred twenty-five".