20033525 has 6 divisors (see below), whose sum is σ = 24841602. Its totient is φ = 16026800.

The previous prime is 20033491. The next prime is 20033527. The reversal of 20033525 is 52533002.

It can be written as a sum of positive squares in 3 ways, for example, as 470596 + 19562929 = 686^2 + 4423^2 .

It is not a de Polignac number, because 20033525 - 2¹⁰ = 20032501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20033497 and 20033506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400646 + ... + 400695.

It is an arithmetic number, because the mean of its divisors is an integer number (4140267).

Almost surely, 2^20033525 is an apocalyptic number.

20033525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20033525 is a deficient number, since it is larger than the sum of its proper divisors (4808077).

20033525 is an equidigital number, since it uses as much as digits as its factorization.

20033525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801351 (or 801346 counting only the distinct ones).

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

The square root of 20033525 is about 4475.8825945281. The cubic root of 20033525 is about 271.5933450781.

Adding to 20033525 its reverse (52533002), we get a palindrome (72566527).

The spelling of 20033525 in words is "twenty million, thirty-three thousand, five hundred twenty-five".