33525989 has 16 divisors (see below), whose sum is σ = 40963968. Its totient is φ = 26783232.

The previous prime is 33525949. The next prime is 33526007. The reversal of 33525989 is 98952533.

It is not a de Polignac number, because 33525989 - 2¹² = 33521893 is a prime.

It is a super-2 number, since 2×33525989² = 2247983876856242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33525949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11417 + ... + 14049.

It is an arithmetic number, because the mean of its divisors is an integer number (2560248).

Almost surely, 2^33525989 is an apocalyptic number.

It is an amenable number.

33525989 is a deficient number, since it is larger than the sum of its proper divisors (7437979).

33525989 is a wasteful number, since it uses less digits than its factorization.

33525989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764.

The product of its digits is 291600, while the sum is 44.

The square root of 33525989 is about 5790.1631237816. The cubic root of 33525989 is about 322.4486275161.

The spelling of 33525989 in words is "thirty-three million, five hundred twenty-five thousand, nine hundred eighty-nine".