1020202430225 has 12 divisors (see below), whose sum is σ = 1380055651440. Its totient is φ = 741965403600.

The previous prime is 1020202430119. The next prime is 1020202430239. The reversal of 1020202430225 is 5220342020201.

It is not a de Polignac number, because 1020202430225 - 2¹⁰ = 1020202429201 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020202430225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1854913235 + ... + 1854913784.

It is an arithmetic number, because the mean of its divisors is an integer number (115004637620).

Almost surely, 2^{1020202430225} is an apocalyptic number.

It is an amenable number.

1020202430225 is a deficient number, since it is larger than the sum of its proper divisors (359853221215).

1020202430225 is a wasteful number, since it uses less digits than its factorization.

1020202430225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709827040 (or 3709827035 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 1020202430225 its reverse (5220342020201), we get a palindrome (6240544450426).

The spelling of 1020202430225 in words is "one trillion, twenty billion, two hundred two million, four hundred thirty thousand, two hundred twenty-five".