20025453443 has 4 divisors (see below), whose sum is σ = 20025762528. Its totient is φ = 20025144360.

The previous prime is 20025453403. The next prime is 20025453449. The reversal of 20025453443 is 34435452002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20025453443 - 2¹⁴ = 20025437059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20025453449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15896 + ... + 200757.

It is an arithmetic number, because the mean of its divisors is an integer number (5006440632).

Almost surely, 2^20025453443 is an apocalyptic number.

20025453443 is a deficient number, since it is larger than the sum of its proper divisors (309085).

20025453443 is an equidigital number, since it uses as much as digits as its factorization.

20025453443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309084.

The product of its (nonzero) digits is 57600, while the sum is 32.

The spelling of 20025453443 in words is "twenty billion, twenty-five million, four hundred fifty-three thousand, four hundred forty-three".