133668825 has 24 divisors (see below), whose sum is σ = 221340000. Its totient is φ = 71180160.

The previous prime is 133668823. The next prime is 133668839. The reversal of 133668825 is 528866331.

It is not a de Polignac number, because 133668825 - 2¹ = 133668823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133668823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77826 + ... + 79524.

It is an arithmetic number, because the mean of its divisors is an integer number (9222500).

Almost surely, 2^133668825 is an apocalyptic number.

133668825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133668825 is a deficient number, since it is larger than the sum of its proper divisors (87671175).

133668825 is a wasteful number, since it uses less digits than its factorization.

133668825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761 (or 2756 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 133668825 is about 11561.5234722765. The cubic root of 133668825 is about 511.3010800963.

The spelling of 133668825 in words is "one hundred thirty-three million, six hundred sixty-eight thousand, eight hundred twenty-five".