20025433 has 8 divisors (see below), whose sum is σ = 21184128. Its totient is φ = 18890784.

The previous prime is 20025419. The next prime is 20025443. The reversal of 20025433 is 33452002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20025433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20025433.

It is not an unprimeable number, because it can be changed into a prime (20025403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4285 + ... + 7642.

It is an arithmetic number, because the mean of its divisors is an integer number (2648016).

Almost surely, 2^20025433 is an apocalyptic number.

20025433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20025433 is a deficient number, since it is larger than the sum of its proper divisors (1158695).

20025433 is a wasteful number, since it uses less digits than its factorization.

20025433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12023.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20025433 is about 4474.9785474346. The cubic root of 20025433 is about 271.5567725608.

Adding to 20025433 its reverse (33452002), we get a palindrome (53477435).

The spelling of 20025433 in words is "twenty million, twenty-five thousand, four hundred thirty-three".