20525010451 has 16 divisors (see below), whose sum is σ = 22969749600. Its totient is φ = 18178041600.

The previous prime is 20525010431. The next prime is 20525010463. The reversal of 20525010451 is 15401052502.

It is a cyclic number.

It is not a de Polignac number, because 20525010451 - 2¹³ = 20525002259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20525010421) 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 15 ways as a sum of consecutive naturals, for example, 287665 + ... + 351853.

It is an arithmetic number, because the mean of its divisors is an integer number (1435609350).

Almost surely, 2^20525010451 is an apocalyptic number.

20525010451 is a deficient number, since it is larger than the sum of its proper divisors (2444739149).

20525010451 is a wasteful number, since it uses less digits than its factorization.

20525010451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64950.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 20525010451 its reverse (15401052502), we get a palindrome (35926062953).

The spelling of 20525010451 in words is "twenty billion, five hundred twenty-five million, ten thousand, four hundred fifty-one".