33251325066 has 80 divisors (see below), whose sum is σ = 79777395720. Its totient is φ = 10314501120.

The previous prime is 33251325053. The next prime is 33251325067. The reversal of 33251325066 is 66052315233.

33251325066 is a `hidden beast` number, since 3 + 32 + 513 + 2 + 50 + 66 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22387640625 + 10863684441 = 149625^2 + 104229^2 .

It is a super-2 number, since 2×33251325066² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33251325066.

It is not an unprimeable number, because it can be changed into a prime (33251325067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 177276 + ... + 312936.

Almost surely, 2^33251325066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33251325066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39888697860).

33251325066 is an abundant number, since it is smaller than the sum of its proper divisors (46526070654).

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

33251325066 is a wasteful number, since it uses less digits than its factorization.

33251325066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135781 (or 135772 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 33251325066 in words is "thirty-three billion, two hundred fifty-one million, three hundred twenty-five thousand, sixty-six".