20600425 has 6 divisors (see below), whose sum is σ = 25544558. Its totient is φ = 16480320.

The previous prime is 20600407. The next prime is 20600431. The reversal of 20600425 is 52400602.

It can be written as a sum of positive squares in 3 ways, for example, as 197136 + 20403289 = 444^2 + 4517^2 .

It is not a de Polignac number, because 20600425 - 2⁷ = 20600297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 411984 + ... + 412033.

Almost surely, 2^20600425 is an apocalyptic number.

20600425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20600425 is a deficient number, since it is larger than the sum of its proper divisors (4944133).

20600425 is an equidigital number, since it uses as much as digits as its factorization.

20600425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824027 (or 824022 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20600425 is about 4538.7691062666. The cubic root of 20600425 is about 274.1313638310.

It can be divided in two parts, 20600 and 425, that added together give a square (21025 = 145²).

The spelling of 20600425 in words is "twenty million, six hundred thousand, four hundred twenty-five".