33173158225 has 27 divisors (see below), whose sum is σ = 41789670993. Its totient is φ = 26122530240.

The previous prime is 33173158223. The next prime is 33173158229. The reversal of 33173158225 is 52285137133.

The square root of 33173158225 is 182135.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 181521729 + 32991636496 = 13473^2 + 181636^2 .

It is not a de Polignac number, because 33173158225 - 2¹ = 33173158223 is a prime.

It is a super-2 number, since 2×33173158225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33173158223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66479026 + ... + 66479524.

Almost surely, 2^33173158225 is an apocalyptic number.

33173158225 is the 182135-th square number.

33173158225 is the 91068-th centered octagonal number.

It is an amenable number.

33173158225 is a deficient number, since it is larger than the sum of its proper divisors (8616512768).

33173158225 is an frugal number, since it uses more digits than its factorization.

33173158225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 577 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The spelling of 33173158225 in words is "thirty-three billion, one hundred seventy-three million, one hundred fifty-eight thousand, two hundred twenty-five".