133685825 has 24 divisors (see below), whose sum is σ = 204028608. Its totient is φ = 84617280.

The previous prime is 133685803. The next prime is 133685861. The reversal of 133685825 is 528586331.

It is not a de Polignac number, because 133685825 - 2¹⁰ = 133684801 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27107 + ... + 31656.

It is an arithmetic number, because the mean of its divisors is an integer number (8501192).

Almost surely, 2^133685825 is an apocalyptic number.

It is an amenable number.

133685825 is a deficient number, since it is larger than the sum of its proper divisors (70342783).

133685825 is a wasteful number, since it uses less digits than its factorization.

133685825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58793 (or 58788 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 133685825 is about 11562.2586461297. The cubic root of 133685825 is about 511.3227549331.

The spelling of 133685825 in words is "one hundred thirty-three million, six hundred eighty-five thousand, eight hundred twenty-five".