20116725 has 36 divisors (see below), whose sum is σ = 35149536. Its totient is φ = 10150560.

The previous prime is 20116721. The next prime is 20116727. The reversal of 20116725 is 52761102.

It is not a de Polignac number, because 20116725 - 2² = 20116721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20116695 and 20116704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26704 + ... + 27446.

It is an arithmetic number, because the mean of its divisors is an integer number (976376).

Almost surely, 2^20116725 is an apocalyptic number.

20116725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20116725 is a deficient number, since it is larger than the sum of its proper divisors (15032811).

20116725 is a wasteful number, since it uses less digits than its factorization.

20116725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 20116725 is about 4485.1672209629. The cubic root of 20116725 is about 271.9688049937.

Adding to 20116725 its reverse (52761102), we get a palindrome (72877827).

The spelling of 20116725 in words is "twenty million, one hundred sixteen thousand, seven hundred twenty-five".