20525220451442 has 16 divisors (see below), whose sum is σ = 36044289574272. Its totient is φ = 8581973707680.

The previous prime is 20525220451441. The next prime is 20525220451469. The reversal of 20525220451442 is 24415402252502.

It is a junction number, because it is equal to n+sod(n) for n = 20525220451396 and 20525220451405.

It is not an unprimeable number, because it can be changed into a prime (20525220451441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17879111318 + ... + 17879112465.

It is an arithmetic number, because the mean of its divisors is an integer number (2252768098392).

Almost surely, 2^{20525220451442} is an apocalyptic number.

20525220451442 is a deficient number, since it is larger than the sum of its proper divisors (15519069122830).

20525220451442 is a wasteful number, since it uses less digits than its factorization.

20525220451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35758223833.

The product of its (nonzero) digits is 256000, while the sum is 38.

The spelling of 20525220451442 in words is "twenty trillion, five hundred twenty-five billion, two hundred twenty million, four hundred fifty-one thousand, four hundred forty-two".