20252044541 has 4 divisors (see below), whose sum is σ = 20271650652. Its totient is φ = 20232438432.

The previous prime is 20252044537. The next prime is 20252044619. The reversal of 20252044541 is 14544025202.

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 18838660516 + 1413384025 = 137254^2 + 37595^2 .

It is a cyclic number.

It is not a de Polignac number, because 20252044541 - 2² = 20252044537 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 (20252044511) 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, 9801506 + ... + 9803571.

It is an arithmetic number, because the mean of its divisors is an integer number (5067912663).

Almost surely, 2^20252044541 is an apocalyptic number.

It is an amenable number.

20252044541 is a deficient number, since it is larger than the sum of its proper divisors (19606111).

20252044541 is a wasteful number, since it uses less digits than its factorization.

20252044541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19606110.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 20252044541 its reverse (14544025202), we get a palindrome (34796069743).

The spelling of 20252044541 in words is "twenty billion, two hundred fifty-two million, forty-four thousand, five hundred forty-one".