20042518025 has 12 divisors (see below), whose sum is σ = 24933685392. Its totient is φ = 15981780240.

The previous prime is 20042517949. The next prime is 20042518079. The reversal of 20042518025 is 52081524002.

It is not a de Polignac number, because 20042518025 - 2¹² = 20042513929 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 1298027 + ... + 1313376.

It is an arithmetic number, because the mean of its divisors is an integer number (2077807116).

Almost surely, 2^20042518025 is an apocalyptic number.

20042518025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20042518025 is a deficient number, since it is larger than the sum of its proper divisors (4891167367).

20042518025 is a wasteful number, since it uses less digits than its factorization.

20042518025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611720 (or 2611715 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 20042518025 in words is "twenty billion, forty-two million, five hundred eighteen thousand, twenty-five".