20525233 has 8 divisors (see below), whose sum is σ = 21117888. Its totient is φ = 19937904.

The previous prime is 20525231. The next prime is 20525251. The reversal of 20525233 is 33252502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20525233 - 2¹ = 20525231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20525231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7260 + ... + 9682.

It is an arithmetic number, because the mean of its divisors is an integer number (2639736).

Almost surely, 2^20525233 is an apocalyptic number.

It is an amenable number.

20525233 is a deficient number, since it is larger than the sum of its proper divisors (592655).

20525233 is a wasteful number, since it uses less digits than its factorization.

20525233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20525233 is about 4530.4782308273. The cubic root of 20525233 is about 273.7974287275.

Adding to 20525233 its reverse (33252502), we get a palindrome (53777735).

The spelling of 20525233 in words is "twenty million, five hundred twenty-five thousand, two hundred thirty-three".