1213405042425 has 48 divisors (see below), whose sum is σ = 2095178661888. Its totient is φ = 618482779200.

The previous prime is 1213405042397. The next prime is 1213405042429. The reversal of 1213405042425 is 5242405043121.

It is not a de Polignac number, because 1213405042425 - 2⁶ = 1213405042361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213405042429) 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, 1719624 + ... + 2320326.

It is an arithmetic number, because the mean of its divisors is an integer number (43649555456).

Almost surely, 2^{1213405042425} is an apocalyptic number.

1213405042425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213405042425 is a deficient number, since it is larger than the sum of its proper divisors (881773619463).

1213405042425 is a wasteful number, since it uses less digits than its factorization.

1213405042425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601910 (or 601905 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 1213405042425 in words is "one trillion, two hundred thirteen billion, four hundred five million, forty-two thousand, four hundred twenty-five".