133557125 has 16 divisors (see below), whose sum is σ = 179502960. Its totient is φ = 98625600.

The previous prime is 133557119. The next prime is 133557133. The reversal of 133557125 is 521755331.

It can be written as a sum of positive squares in 8 ways, for example, as 76615009 + 56942116 = 8753^2 + 7546^2 .

It is not a de Polignac number, because 133557125 - 2⁸ = 133556869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133557091 and 133557100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39470 + ... + 42719.

It is an arithmetic number, because the mean of its divisors is an integer number (11218935).

Almost surely, 2^133557125 is an apocalyptic number.

It is an amenable number.

133557125 is a deficient number, since it is larger than the sum of its proper divisors (45945835).

133557125 is an equidigital number, since it uses as much as digits as its factorization.

133557125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82217 (or 82207 counting only the distinct ones).

The product of its digits is 15750, while the sum is 32.

The square root of 133557125 is about 11556.6917844165. The cubic root of 133557125 is about 511.1586179412.

The spelling of 133557125 in words is "one hundred thirty-three million, five hundred fifty-seven thousand, one hundred twenty-five".