20025441452421 has 48 divisors (see below), whose sum is σ = 30543267680640. Its totient is φ = 12608103029760.

The previous prime is 20025441452417. The next prime is 20025441452441. The reversal of 20025441452421 is 12425414452002.

20025441452421 is a `hidden beast` number, since 20 + 0 + 2 + 54 + 41 + 4 + 524 + 21 = 666.

It is not a de Polignac number, because 20025441452421 - 2² = 20025441452417 is a prime.

It is a super-2 number, since 2×20025441452421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025441452441) 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 47 ways as a sum of consecutive naturals, for example, 414486856 + ... + 414535166.

It is an arithmetic number, because the mean of its divisors is an integer number (636318076680).

Almost surely, 2^{20025441452421} is an apocalyptic number.

It is an amenable number.

20025441452421 is a deficient number, since it is larger than the sum of its proper divisors (10517826228219).

20025441452421 is a wasteful number, since it uses less digits than its factorization.

20025441452421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55866 (or 55863 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

The spelling of 20025441452421 in words is "twenty trillion, twenty-five billion, four hundred forty-one million, four hundred fifty-two thousand, four hundred twenty-one".