133425330 has 64 divisors (see below), whose sum is σ = 333704448. Its totient is φ = 34110720.

The previous prime is 133425319. The next prime is 133425337. The reversal of 133425330 is 33524331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133425330.

It is not an unprimeable number, because it can be changed into a prime (133425337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77964 + ... + 79656.

It is an arithmetic number, because the mean of its divisors is an integer number (5214132).

Almost surely, 2^133425330 is an apocalyptic number.

133425330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133425330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166852224).

133425330 is an abundant number, since it is smaller than the sum of its proper divisors (200279118).

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

133425330 is a wasteful number, since it uses less digits than its factorization.

133425330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811.

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 133425330 is about 11550.9882694079. The cubic root of 133425330 is about 510.9904244385.

Adding to 133425330 its reverse (33524331), we get a palindrome (166949661).

Subtracting from 133425330 its reverse (33524331), we obtain a palindrome (99900999).

The spelling of 133425330 in words is "one hundred thirty-three million, four hundred twenty-five thousand, three hundred thirty".