20425727 has 8 divisors (see below), whose sum is σ = 23371392. Its totient is φ = 17487000.

The previous prime is 20425711. The next prime is 20425729. The reversal of 20425727 is 72752402.

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 20425727 - 2⁴ = 20425711 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20425727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425729) 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, 9152 + ... + 11162.

It is an arithmetic number, because the mean of its divisors is an integer number (2921424).

Almost surely, 2^20425727 is an apocalyptic number.

20425727 is a deficient number, since it is larger than the sum of its proper divisors (2945665).

20425727 is a wasteful number, since it uses less digits than its factorization.

20425727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 20425727 is about 4519.4830456591. The cubic root of 20425727 is about 273.3542566110.

The spelling of 20425727 in words is "twenty million, four hundred twenty-five thousand, seven hundred twenty-seven".