1213526368425 has 48 divisors (see below), whose sum is σ = 2427868570752. Its totient is φ = 522122265600.

The previous prime is 1213526368421. The next prime is 1213526368451. The reversal of 1213526368425 is 5248636253121.

It is not a de Polignac number, because 1213526368425 - 2² = 1213526368421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213526368421) 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, 67975746 + ... + 67993595.

It is an arithmetic number, because the mean of its divisors is an integer number (50580595224).

Almost surely, 2^{1213526368425} is an apocalyptic number.

1213526368425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213526368425 is an abundant number, since it is smaller than the sum of its proper divisors (1214342202327).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213526368425 is a wasteful number, since it uses less digits than its factorization.

1213526368425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135969378 (or 135969373 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 1213526368425 in words is "one trillion, two hundred thirteen billion, five hundred twenty-six million, three hundred sixty-eight thousand, four hundred twenty-five".