20002485 has 16 divisors (see below), whose sum is σ = 32169600. Its totient is φ = 10612800.

The previous prime is 20002457. The next prime is 20002487. The reversal of 20002485 is 58420002.

It is not a de Polignac number, because 20002485 - 2⁵ = 20002453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002487) 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, 366 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (2010600).

Almost surely, 2^20002485 is an apocalyptic number.

It is an amenable number.

20002485 is a deficient number, since it is larger than the sum of its proper divisors (12167115).

20002485 is a wasteful number, since it uses less digits than its factorization.

20002485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6908.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20002485 is about 4472.4137778162. The cubic root of 20002485 is about 271.4530034069.

Adding to 20002485 its reverse (58420002), we get a palindrome (78422487).

The spelling of 20002485 in words is "twenty million, two thousand, four hundred eighty-five".