20433525 has 24 divisors (see below), whose sum is σ = 38610624. Its totient is φ = 9340800.

The previous prime is 20433481. The next prime is 20433533. The reversal of 20433525 is 52533402.

It is not a de Polignac number, because 20433525 - 2⁷ = 20433397 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20433495 and 20433504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18936 + ... + 19985.

It is an arithmetic number, because the mean of its divisors is an integer number (1608776).

Almost surely, 2^20433525 is an apocalyptic number.

20433525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20433525 is a deficient number, since it is larger than the sum of its proper divisors (18177099).

20433525 is a wasteful number, since it uses less digits than its factorization.

20433525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38941 (or 38936 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 20433525 is about 4520.3456726228. The cubic root of 20433525 is about 273.3890386498.

Adding to 20433525 its reverse (52533402), we get a palindrome (72966927).

The spelling of 20433525 in words is "twenty million, four hundred thirty-three thousand, five hundred twenty-five".