20525243441 has 8 divisors (see below), whose sum is σ = 20638981440. Its totient is φ = 20411602288.

The previous prime is 20525243381. The next prime is 20525243477. The reversal of 20525243441 is 14434252502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20525243441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20525243398 and 20525243407.

It is not an unprimeable number, because it can be changed into a prime (20525243491) 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 7 ways as a sum of consecutive naturals, for example, 423620 + ... + 469578.

It is an arithmetic number, because the mean of its divisors is an integer number (2579872680).

Almost surely, 2^20525243441 is an apocalyptic number.

It is an amenable number.

20525243441 is a deficient number, since it is larger than the sum of its proper divisors (113737999).

20525243441 is a wasteful number, since it uses less digits than its factorization.

20525243441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48423.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 20525243441 its reverse (14434252502), we get a palindrome (34959495943).

The spelling of 20525243441 in words is "twenty billion, five hundred twenty-five million, two hundred forty-three thousand, four hundred forty-one".