20173425 has 12 divisors (see below), whose sum is σ = 33353520. Its totient is φ = 10759120.

The previous prime is 20173423. The next prime is 20173427. The reversal of 20173425 is 52437102.

It is an interprime number because it is at equal distance from previous prime (20173423) and next prime (20173427).

It is not a de Polignac number, because 20173425 - 2¹ = 20173423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20173395 and 20173404.

It is not an unprimeable number, because it can be changed into a prime (20173423) 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 11 ways as a sum of consecutive naturals, for example, 134415 + ... + 134564.

It is an arithmetic number, because the mean of its divisors is an integer number (2779460).

Almost surely, 2^20173425 is an apocalyptic number.

20173425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20173425 is a deficient number, since it is larger than the sum of its proper divisors (13180095).

20173425 is a wasteful number, since it uses less digits than its factorization.

20173425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268992 (or 268987 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20173425 is about 4491.4836078962. The cubic root of 20173425 is about 272.2240845508.

The spelling of 20173425 in words is "twenty million, one hundred seventy-three thousand, four hundred twenty-five".