20773625 has 8 divisors (see below), whose sum is σ = 25925640. Its totient is φ = 16618800.

The previous prime is 20773607. The next prime is 20773637. The reversal of 20773625 is 52637702.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2042041 + 18731584 = 1429^2 + 4328^2 .

It is not a de Polignac number, because 20773625 - 2¹⁰ = 20772601 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20773591 and 20773600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82970 + ... + 83219.

It is an arithmetic number, because the mean of its divisors is an integer number (3240705).

Almost surely, 2^20773625 is an apocalyptic number.

20773625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20773625 is a deficient number, since it is larger than the sum of its proper divisors (5152015).

20773625 is an equidigital number, since it uses as much as digits as its factorization.

20773625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166204 (or 166194 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 20773625 is about 4557.8092325151. The cubic root of 20773625 is about 274.8974824483.

The spelling of 20773625 in words is "twenty million, seven hundred seventy-three thousand, six hundred twenty-five".