1225520404133 has 4 divisors (see below), whose sum is σ = 1225538679360. Its totient is φ = 1225502128908.

The previous prime is 1225520404111. The next prime is 1225520404139. The reversal of 1225520404133 is 3314040255221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1225520404133 - 2³⁶ = 1156800927397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225520404133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225520404139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9036653 + ... + 9171266.

It is an arithmetic number, because the mean of its divisors is an integer number (306384669840).

Almost surely, 2^{1225520404133} is an apocalyptic number.

It is an amenable number.

1225520404133 is a deficient number, since it is larger than the sum of its proper divisors (18275227).

1225520404133 is an equidigital number, since it uses as much as digits as its factorization.

1225520404133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18275226.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1225520404133 its reverse (3314040255221), we get a palindrome (4539560659354).

The spelling of 1225520404133 in words is "one trillion, two hundred twenty-five billion, five hundred twenty million, four hundred four thousand, one hundred thirty-three".