20025442232479 has 2 divisors, whose sum is σ = 20025442232480. Its totient is φ = 20025442232478.

The previous prime is 20025442232459. The next prime is 20025442232503. The reversal of 20025442232479 is 97423224452002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20025442232479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20025442232429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012721116239 + 10012721116240.

It is an arithmetic number, because the mean of its divisors is an integer number (10012721116240).

Almost surely, 2^{20025442232479} is an apocalyptic number.

20025442232479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20025442232479 is an equidigital number, since it uses as much as digits as its factorization.

20025442232479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 46.

The spelling of 20025442232479 in words is "twenty trillion, twenty-five billion, four hundred forty-two million, two hundred thirty-two thousand, four hundred seventy-nine".