133025213 has 4 divisors (see below), whose sum is σ = 140026560. Its totient is φ = 126023868.

The previous prime is 133025209. The next prime is 133025227. The reversal of 133025213 is 312520331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133025213 - 2² = 133025209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133025203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500645 + ... + 3500682.

It is an arithmetic number, because the mean of its divisors is an integer number (35006640).

Almost surely, 2^133025213 is an apocalyptic number.

It is an amenable number.

133025213 is a deficient number, since it is larger than the sum of its proper divisors (7001347).

133025213 is an equidigital number, since it uses as much as digits as its factorization.

133025213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001346.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 133025213 is about 11533.6556650526. The cubic root of 133025213 is about 510.4791255431.

Adding to 133025213 its reverse (312520331), we get a palindrome (445545544).

The spelling of 133025213 in words is "one hundred thirty-three million, twenty-five thousand, two hundred thirteen".