20725191379 has 2 divisors, whose sum is σ = 20725191380. Its totient is φ = 20725191378.

The previous prime is 20725191287. The next prime is 20725191401. The reversal of 20725191379 is 97319152702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20725191379 - 2⁷ = 20725191251 is a prime.

It is not a weakly prime, because it can be changed into another prime (20725191479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10362595689 + 10362595690.

It is an arithmetic number, because the mean of its divisors is an integer number (10362595690).

Almost surely, 2^20725191379 is an apocalyptic number.

20725191379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20725191379 is an equidigital number, since it uses as much as digits as its factorization.

20725191379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 46.

The spelling of 20725191379 in words is "twenty billion, seven hundred twenty-five million, one hundred ninety-one thousand, three hundred seventy-nine".