133444025 has 48 divisors (see below), whose sum is σ = 196445760. Its totient is φ = 88646400.

The previous prime is 133444009. The next prime is 133444039. The reversal of 133444025 is 520444331.

It is not a de Polignac number, because 133444025 - 2⁴ = 133444009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133443985 and 133444003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 582611 + ... + 582839.

It is an arithmetic number, because the mean of its divisors is an integer number (4092620).

Almost surely, 2^133444025 is an apocalyptic number.

It is an amenable number.

133444025 is a deficient number, since it is larger than the sum of its proper divisors (63001735).

133444025 is a wasteful number, since it uses less digits than its factorization.

133444025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 133444025 is about 11551.7974791805. The cubic root of 133444025 is about 511.0142892720.

Adding to 133444025 its reverse (520444331), we get a palindrome (653888356).

The spelling of 133444025 in words is "one hundred thirty-three million, four hundred forty-four thousand, twenty-five".