33135725 has 12 divisors (see below), whose sum is σ = 46958304. Its totient is φ = 22721520.

The previous prime is 33135643. The next prime is 33135731. The reversal of 33135725 is 52753133.

It is not a de Polignac number, because 33135725 - 2⁸ = 33135469 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, 94499 + ... + 94848.

It is an arithmetic number, because the mean of its divisors is an integer number (3913192).

Almost surely, 2^33135725 is an apocalyptic number.

33135725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33135725 is a deficient number, since it is larger than the sum of its proper divisors (13822579).

33135725 is a wasteful number, since it uses less digits than its factorization.

33135725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189364 (or 189359 counting only the distinct ones).

The product of its digits is 9450, while the sum is 29.

The square root of 33135725 is about 5756.3638696663. The cubic root of 33135725 is about 321.1925715045.

Adding to 33135725 its reverse (52753133), we get a palindrome (85888858).

The spelling of 33135725 in words is "thirty-three million, one hundred thirty-five thousand, seven hundred twenty-five".