20002475 has 24 divisors (see below), whose sum is σ = 25712640. Its totient is φ = 15428000.

The previous prime is 20002457. The next prime is 20002487. The reversal of 20002475 is 57420002.

It is not a de Polignac number, because 20002475 - 2¹⁰ = 20001451 is a prime.

It is a super-2 number, since 2×20002475² = 800198012251250, which contains 22 as substring.

20002475 is a modest number, since divided by 2475 gives 2000 as remainder.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 104630 + ... + 104820.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^20002475 is an apocalyptic number.

20002475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20002475 is a deficient number, since it is larger than the sum of its proper divisors (5710165).

20002475 is a wasteful number, since it uses less digits than its factorization.

20002475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20002475 is about 4472.4126598515. The cubic root of 20002475 is about 271.4529581703.

Adding to 20002475 its reverse (57420002), we get a palindrome (77422477).

The spelling of 20002475 in words is "twenty million, two thousand, four hundred seventy-five".