133646173225 has 6 divisors (see below), whose sum is σ = 165721254830. Its totient is φ = 106916938560.

The previous prime is 133646173207. The next prime is 133646173303. The reversal of 133646173225 is 522371646331.

It can be written as a sum of positive squares in 3 ways, for example, as 28314119824 + 105332053401 = 168268^2 + 324549^2 .

It is not a de Polignac number, because 133646173225 - 2²³ = 133637784617 is a prime.

It is a super-2 number, since 2×133646173225² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2672923440 + ... + 2672923489.

Almost surely, 2^133646173225 is an apocalyptic number.

It is an amenable number.

133646173225 is a deficient number, since it is larger than the sum of its proper divisors (32075081605).

133646173225 is an equidigital number, since it uses as much as digits as its factorization.

133646173225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345846939 (or 5345846934 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The spelling of 133646173225 in words is "one hundred thirty-three billion, six hundred forty-six million, one hundred seventy-three thousand, two hundred twenty-five".