133225452 has 24 divisors (see below), whose sum is σ = 345399600. Its totient is φ = 44408448.

The previous prime is 133225429. The next prime is 133225501. The reversal of 133225452 is 254522331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616677 + ... + 616892.

It is an arithmetic number, because the mean of its divisors is an integer number (14391650).

Almost surely, 2^133225452 is an apocalyptic number.

133225452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133225452 is an abundant number, since it is smaller than the sum of its proper divisors (212174148).

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

133225452 is a wasteful number, since it uses less digits than its factorization.

133225452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233582 (or 1233574 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 133225452 is about 11542.3330397281. Note that the first 3 decimals coincide. The cubic root of 133225452 is about 510.7351336126.

Adding to 133225452 its reverse (254522331), we get a palindrome (387747783).

The spelling of 133225452 in words is "one hundred thirty-three million, two hundred twenty-five thousand, four hundred fifty-two".