20679925 has 12 divisors (see below), whose sum is σ = 29306656. Its totient is φ = 14180400.

The previous prime is 20679877. The next prime is 20679959. The reversal of 20679925 is 52997602.

It is a happy number.

It is not a de Polignac number, because 20679925 - 2⁷ = 20679797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58911 + ... + 59260.

Almost surely, 2^20679925 is an apocalyptic number.

20679925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20679925 is a deficient number, since it is larger than the sum of its proper divisors (8626731).

20679925 is a wasteful number, since it uses less digits than its factorization.

20679925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118188 (or 118183 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 20679925 is about 4547.5185541128. The cubic root of 20679925 is about 274.4835486152.

The spelling of 20679925 in words is "twenty million, six hundred seventy-nine thousand, nine hundred twenty-five".