20252411103545 has 4 divisors (see below), whose sum is σ = 24302893324260. Its totient is φ = 16201928882832.

The previous prime is 20252411103541. The next prime is 20252411103647. The reversal of 20252411103545 is 54530111425202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3651871314169 + 16600539789376 = 1910987^2 + 4074376^2 .

It is a cyclic number.

It is not a de Polignac number, because 20252411103545 - 2² = 20252411103541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20252411103541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025241110350 + ... + 2025241110359.

It is an arithmetic number, because the mean of its divisors is an integer number (6075723331065).

Almost surely, 2^{20252411103545} is an apocalyptic number.

It is an amenable number.

20252411103545 is a deficient number, since it is larger than the sum of its proper divisors (4050482220715).

20252411103545 is an equidigital number, since it uses as much as digits as its factorization.

20252411103545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050482220714.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 20252411103545 its reverse (54530111425202), we get a palindrome (74782522528747).

The spelling of 20252411103545 in words is "twenty trillion, two hundred fifty-two billion, four hundred eleven million, one hundred three thousand, five hundred forty-five".