133938225 has 24 divisors (see below), whose sum is σ = 246050720. Its totient is φ = 71433360.

The previous prime is 133938193. The next prime is 133938253. The reversal of 133938225 is 522839331.

It is not a de Polignac number, because 133938225 - 2⁵ = 133938193 is a prime.

It is a super-3 number, since 3×133938225³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133938225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98539 + ... + 99888.

Almost surely, 2^133938225 is an apocalyptic number.

133938225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133938225 is a deficient number, since it is larger than the sum of its proper divisors (112112495).

133938225 is a wasteful number, since it uses less digits than its factorization.

133938225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198446 (or 198435 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 133938225 is about 11573.1683215963. The cubic root of 133938225 is about 511.6443465644.

The spelling of 133938225 in words is "one hundred thirty-three million, nine hundred thirty-eight thousand, two hundred twenty-five".