20004004425 has 12 divisors (see below), whose sum is σ = 33073287440. Its totient is φ = 10668802320.

The previous prime is 20004004393. The next prime is 20004004487. The reversal of 20004004425 is 52440040002.

It is not a de Polignac number, because 20004004425 - 2⁵ = 20004004393 is a prime.

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, 133359955 + ... + 133360104.

Almost surely, 2^20004004425 is an apocalyptic number.

20004004425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20004004425 is a deficient number, since it is larger than the sum of its proper divisors (13069283015).

20004004425 is a wasteful number, since it uses less digits than its factorization.

20004004425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266720072 (or 266720067 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 20004004425 its reverse (52440040002), we get a palindrome (72444044427).

The spelling of 20004004425 in words is "twenty billion, four million, four thousand, four hundred twenty-five".