20144625 has 16 divisors (see below), whose sum is σ = 33521280. Its totient is φ = 10743600.

The previous prime is 20144599. The next prime is 20144627. The reversal of 20144625 is 52644102.

It is not a de Polignac number, because 20144625 - 2⁷ = 20144497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20144595 and 20144604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144627) 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 15 ways as a sum of consecutive naturals, for example, 26485 + ... + 27234.

It is an arithmetic number, because the mean of its divisors is an integer number (2095080).

Almost surely, 2^20144625 is an apocalyptic number.

20144625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20144625 is a deficient number, since it is larger than the sum of its proper divisors (13376655).

20144625 is an equidigital number, since it uses as much as digits as its factorization.

20144625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53737 (or 53727 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20144625 is about 4488.2763952324. The cubic root of 20144625 is about 272.0944786052.

Adding to 20144625 its reverse (52644102), we get a palindrome (72788727).

The spelling of 20144625 in words is "twenty million, one hundred forty-four thousand, six hundred twenty-five".