33198725 has 36 divisors (see below), whose sum is σ = 49129668. Its totient is φ = 22176000.

The previous prime is 33198703. The next prime is 33198743. The reversal of 33198725 is 52789133.

It can be written as a sum of positive squares in 6 ways, for example, as 2307361 + 30891364 = 1519^2 + 5558^2 .

It is not a de Polignac number, because 33198725 - 2⁶ = 33198661 is a prime.

It is a super-2 number, since 2×33198725² = 2204310683251250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49895 + ... + 50555.

It is an arithmetic number, because the mean of its divisors is an integer number (1364713).

Almost surely, 2^33198725 is an apocalyptic number.

33198725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33198725 is a deficient number, since it is larger than the sum of its proper divisors (15930943).

33198725 is a wasteful number, since it uses less digits than its factorization.

33198725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 714 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 33198725 is about 5761.8334755527. The cubic root of 33198725 is about 321.3960006973.

The spelling of 33198725 in words is "thirty-three million, one hundred ninety-eight thousand, seven hundred twenty-five".