20704425 has 48 divisors (see below), whose sum is σ = 39580800. Its totient is φ = 9354240.

The previous prime is 20704417. The next prime is 20704447. The reversal of 20704425 is 52440702.

It is not a de Polignac number, because 20704425 - 2³ = 20704417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20704395 and 20704404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59151 + ... + 59499.

It is an arithmetic number, because the mean of its divisors is an integer number (824600).

Almost surely, 2^20704425 is an apocalyptic number.

20704425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20704425 is a deficient number, since it is larger than the sum of its proper divisors (18876375).

20704425 is a wasteful number, since it uses less digits than its factorization.

20704425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 20704425 is about 4550.2115335443. The cubic root of 20704425 is about 274.5919015709.

The spelling of 20704425 in words is "twenty million, seven hundred four thousand, four hundred twenty-five".