20004525451 has 4 divisors (see below), whose sum is σ = 20137005904. Its totient is φ = 19872045000.

The previous prime is 20004525449. The next prime is 20004525473. The reversal of 20004525451 is 15452540002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20004525451 - 2¹ = 20004525449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004555451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66240000 + ... + 66240301.

It is an arithmetic number, because the mean of its divisors is an integer number (5034251476).

Almost surely, 2^20004525451 is an apocalyptic number.

20004525451 is a deficient number, since it is larger than the sum of its proper divisors (132480453).

20004525451 is a wasteful number, since it uses less digits than its factorization.

20004525451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132480452.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 20004525451 in words is "twenty billion, four million, five hundred twenty-five thousand, four hundred fifty-one".