20725191359 has 8 divisors (see below), whose sum is σ = 22019309760. Its totient is φ = 19469703456.

The previous prime is 20725191287. The next prime is 20725191379. The reversal of 20725191359 is 95319152702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20725191359 - 2⁸ = 20725191103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20725191379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9656519 + ... + 9658664.

It is an arithmetic number, because the mean of its divisors is an integer number (2752413720).

Almost surely, 2^20725191359 is an apocalyptic number.

20725191359 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20725191359 is a deficient number, since it is larger than the sum of its proper divisors (1294118401).

20725191359 is a wasteful number, since it uses less digits than its factorization.

20725191359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19315249.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 20725191359 in words is "twenty billion, seven hundred twenty-five million, one hundred ninety-one thousand, three hundred fifty-nine".