1213405024225 has 12 divisors (see below), whose sum is σ = 1536635470464. Its totient is φ = 950070315920.

The previous prime is 1213405024189. The next prime is 1213405024229. The reversal of 1213405024225 is 5224205043121.

It is a happy number.

It is not a de Polignac number, because 1213405024225 - 2³⁹ = 663649210337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213405024229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516341389 + ... + 516343738.

It is an arithmetic number, because the mean of its divisors is an integer number (128052955872).

Almost surely, 2^{1213405024225} is an apocalyptic number.

It is an amenable number.

1213405024225 is a deficient number, since it is larger than the sum of its proper divisors (323230446239).

1213405024225 is a wasteful number, since it uses less digits than its factorization.

1213405024225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032685184 (or 1032685179 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 1213405024225 in words is "one trillion, two hundred thirteen billion, four hundred five million, twenty-four thousand, two hundred twenty-five".