20243425501 has 8 divisors (see below), whose sum is σ = 21816509400. Its totient is φ = 18672612672.

The previous prime is 20243425483. The next prime is 20243425523. The reversal of 20243425501 is 10552434202.

It can be written as a sum of positive squares in 4 ways, for example, as 10547084601 + 9696340900 = 102699^2 + 98470^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20243425501 - 2⁵ = 20243425469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20243425501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243425541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549226 + ... + 584923.

It is an arithmetic number, because the mean of its divisors is an integer number (2727063675).

Almost surely, 2^20243425501 is an apocalyptic number.

It is an amenable number.

20243425501 is a deficient number, since it is larger than the sum of its proper divisors (1573083899).

20243425501 is a wasteful number, since it uses less digits than its factorization.

20243425501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135535.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20243425501 its reverse (10552434202), we get a palindrome (30795859703).

The spelling of 20243425501 in words is "twenty billion, two hundred forty-three million, four hundred twenty-five thousand, five hundred one".