133525212 has 24 divisors (see below), whose sum is σ = 325105536. Its totient is φ = 42573168.

The previous prime is 133525211. The next prime is 133525213. The reversal of 133525212 is 212525331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133525211) and next prime (133525213).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133525211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241618 + ... + 242169.

It is an arithmetic number, because the mean of its divisors is an integer number (13546064).

Almost surely, 2^133525212 is an apocalyptic number.

133525212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133525212 is an abundant number, since it is smaller than the sum of its proper divisors (191580324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133525212 is a wasteful number, since it uses less digits than its factorization.

133525212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483817 (or 483815 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 133525212 is about 11555.3109867281. The cubic root of 133525212 is about 511.1179015201.

The spelling of 133525212 in words is "one hundred thirty-three million, five hundred twenty-five thousand, two hundred twelve".