20925016 has 16 divisors (see below), whose sum is σ = 44839440. Its totient is φ = 8967840.

The previous prime is 20924987. The next prime is 20925019. The reversal of 20925016 is 61052902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20925019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186775 + ... + 186886.

It is an arithmetic number, because the mean of its divisors is an integer number (2802465).

Almost surely, 2^20925016 is an apocalyptic number.

It is an amenable number.

20925016 is an abundant number, since it is smaller than the sum of its proper divisors (23914424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20925016 is a wasteful number, since it uses less digits than its factorization.

20925016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373674 (or 373670 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20925016 is about 4574.3869534616. The cubic root of 20925016 is about 275.5636527374.

Adding to 20925016 its reverse (61052902), we get a palindrome (81977918).

The spelling of 20925016 in words is "twenty million, nine hundred twenty-five thousand, sixteen".