20306125 has 32 divisors (see below), whose sum is σ = 30251520. Its totient is φ = 13305600.

The previous prime is 20306113. The next prime is 20306129. The reversal of 20306125 is 52160302.

It is a happy number.

It is not a de Polignac number, because 20306125 - 2¹¹ = 20304077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19621 + ... + 20629.

It is an arithmetic number, because the mean of its divisors is an integer number (945360).

Almost surely, 2^20306125 is an apocalyptic number.

20306125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20306125 is a deficient number, since it is larger than the sum of its proper divisors (9945395).

20306125 is a wasteful number, since it uses less digits than its factorization.

20306125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20306125 is about 4506.2317960797. The cubic root of 20306125 is about 272.8196736570.

Adding to 20306125 its reverse (52160302), we get a palindrome (72466427).

The spelling of 20306125 in words is "twenty million, three hundred six thousand, one hundred twenty-five".