33020402225 has 24 divisors (see below), whose sum is σ = 41491272960. Its totient is φ = 26064529920.

The previous prime is 33020402179. The next prime is 33020402243. The reversal of 33020402225 is 52220402033.

It is a de Polignac number, because none of the positive numbers 2^k-33020402225 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33020402225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3516737 + ... + 3526113.

It is an arithmetic number, because the mean of its divisors is an integer number (1728803040).

Almost surely, 2^33020402225 is an apocalyptic number.

It is an amenable number.

33020402225 is a deficient number, since it is larger than the sum of its proper divisors (8470870735).

33020402225 is a wasteful number, since it uses less digits than its factorization.

33020402225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11249 (or 11244 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 33020402225 its reverse (52220402033), we get a palindrome (85240804258).

The spelling of 33020402225 in words is "thirty-three billion, twenty million, four hundred two thousand, two hundred twenty-five".