20525412541 has 4 divisors (see below), whose sum is σ = 20772706752. Its totient is φ = 20278118332.

The previous prime is 20525412539. The next prime is 20525412601. The reversal of 20525412541 is 14521452502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20525412541 - 2¹ = 20525412539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525482541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123646981 + ... + 123647146.

It is an arithmetic number, because the mean of its divisors is an integer number (5193176688).

Almost surely, 2^20525412541 is an apocalyptic number.

It is an amenable number.

20525412541 is a deficient number, since it is larger than the sum of its proper divisors (247294211).

20525412541 is an equidigital number, since it uses as much as digits as its factorization.

20525412541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247294210.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 20525412541 in words is "twenty billion, five hundred twenty-five million, four hundred twelve thousand, five hundred forty-one".