1213797488225 has 96 divisors (see below), whose sum is σ = 1754379855360. Its totient is φ = 815938928640.

The previous prime is 1213797488221. The next prime is 1213797488249. The reversal of 1213797488225 is 5228847973121.

It is not a de Polignac number, because 1213797488225 - 2² = 1213797488221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1213797488221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1052729249 + ... + 1052730401.

It is an arithmetic number, because the mean of its divisors is an integer number (18274790160).

Almost surely, 2^{1213797488225} is an apocalyptic number.

It is an amenable number.

1213797488225 is a deficient number, since it is larger than the sum of its proper divisors (540582367135).

1213797488225 is a wasteful number, since it uses less digits than its factorization.

1213797488225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1774 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 59.

The spelling of 1213797488225 in words is "one trillion, two hundred thirteen billion, seven hundred ninety-seven million, four hundred eighty-eight thousand, two hundred twenty-five".