33525020 has 48 divisors (see below), whose sum is σ = 75152448. Its totient is φ = 12518400.

The previous prime is 33525017. The next prime is 33525049. The reversal of 33525020 is 2052533.

It is a super-2 number, since 2×33525020² = 2247853932000800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33524983 and 33525001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51014 + ... + 51666.

It is an arithmetic number, because the mean of its divisors is an integer number (1565676).

Almost surely, 2^33525020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33525020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37576224).

33525020 is an abundant number, since it is smaller than the sum of its proper divisors (41627428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33525020 is a wasteful number, since it uses less digits than its factorization.

33525020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 33525020 is about 5790.0794467779. The cubic root of 33525020 is about 322.4455209139.

Adding to 33525020 its reverse (2052533), we get a palindrome (35577553).

The spelling of 33525020 in words is "thirty-three million, five hundred twenty-five thousand, twenty".