133403225 has 6 divisors (see below), whose sum is σ = 165420030. Its totient is φ = 106722560.

The previous prime is 133403201. The next prime is 133403251. The reversal of 133403225 is 522304331.

It can be written as a sum of positive squares in 3 ways, for example, as 39778249 + 93624976 = 6307^2 + 9676^2 .

It is not a de Polignac number, because 133403225 - 2¹⁶ = 133337689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133403225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2668040 + ... + 2668089.

It is an arithmetic number, because the mean of its divisors is an integer number (27570005).

Almost surely, 2^133403225 is an apocalyptic number.

It is an amenable number.

133403225 is a deficient number, since it is larger than the sum of its proper divisors (32016805).

133403225 is an equidigital number, since it uses as much as digits as its factorization.

133403225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336139 (or 5336134 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133403225 is about 11550.0313852387. The cubic root of 133403225 is about 510.9622037422.

Adding to 133403225 its reverse (522304331), we get a palindrome (655707556).

The spelling of 133403225 in words is "one hundred thirty-three million, four hundred three thousand, two hundred twenty-five".