33031145025 has 18 divisors (see below), whose sum is σ = 59162451270. Its totient is φ = 17616610560.

The previous prime is 33031145011. The next prime is 33031145051. The reversal of 33031145025 is 52054113033.

It can be written as a sum of positive squares in 3 ways, for example, as 106316721 + 32924828304 = 10311^2 + 181452^2 .

It is not a de Polignac number, because 33031145025 - 2¹⁰ = 33031144001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33031145025.

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 17 ways as a sum of consecutive naturals, for example, 73402320 + ... + 73402769.

Almost surely, 2^33031145025 is an apocalyptic number.

It is an amenable number.

33031145025 is a deficient number, since it is larger than the sum of its proper divisors (26131306245).

33031145025 is a wasteful number, since it uses less digits than its factorization.

33031145025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146805105 (or 146805097 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 33031145025 its reverse (52054113033), we get a palindrome (85085258058).

The spelling of 33031145025 in words is "thirty-three billion, thirty-one million, one hundred forty-five thousand, twenty-five".