133904425 has 12 divisors (see below), whose sum is σ = 166329756. Its totient is φ = 106937600.

The previous prime is 133904417. The next prime is 133904431. The reversal of 133904425 is 524409331.

It can be written as a sum of positive squares in 6 ways, for example, as 9715689 + 124188736 = 3117^2 + 11144^2 .

It is not a de Polignac number, because 133904425 - 2³ = 133904417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11085 + ... + 19765.

It is an arithmetic number, because the mean of its divisors is an integer number (13860813).

Almost surely, 2^133904425 is an apocalyptic number.

It is an amenable number.

133904425 is a deficient number, since it is larger than the sum of its proper divisors (32425331).

133904425 is an equidigital number, since it uses as much as digits as its factorization.

133904425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9308 (or 9303 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 133904425 is about 11571.7079551810. The cubic root of 133904425 is about 511.6013042493.

The spelling of 133904425 in words is "one hundred thirty-three million, nine hundred four thousand, four hundred twenty-five".