20164025 has 12 divisors (see below), whose sum is σ = 28575552. Its totient is φ = 13826640.

The previous prime is 20164013. The next prime is 20164049. The reversal of 20164025 is 52046102.

It is a happy number.

It is not a de Polignac number, because 20164025 - 2¹² = 20159929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20163988 and 20164006.

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, 57437 + ... + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (2381296).

Almost surely, 2^20164025 is an apocalyptic number.

20164025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20164025 is a deficient number, since it is larger than the sum of its proper divisors (8411527).

20164025 is a wasteful number, since it uses less digits than its factorization.

20164025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115240 (or 115235 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20164025 is about 4490.4370611334. The cubic root of 20164025 is about 272.1817961781.

The spelling of 20164025 in words is "twenty million, one hundred sixty-four thousand, twenty-five".