20725927 has 4 divisors (see below), whose sum is σ = 20770776. Its totient is φ = 20681080.

The previous prime is 20725891. The next prime is 20725931. The reversal of 20725927 is 72952702.

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 20725927 - 2⁷ = 20725799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20725892 and 20725901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20725127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21724 + ... + 22657.

It is an arithmetic number, because the mean of its divisors is an integer number (5192694).

Almost surely, 2^20725927 is an apocalyptic number.

20725927 is a deficient number, since it is larger than the sum of its proper divisors (44849).

20725927 is an equidigital number, since it uses as much as digits as its factorization.

20725927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44848.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 20725927 is about 4552.5736677181. The cubic root of 20725927 is about 274.6869252569.

The spelling of 20725927 in words is "twenty million, seven hundred twenty-five thousand, nine hundred twenty-seven".