20252432005 has 8 divisors (see below), whose sum is σ = 26172373752. Its totient is φ = 14955642048.

The previous prime is 20252432003. The next prime is 20252432017. The reversal of 20252432005 is 50023425202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 888874596 + 19363557409 = 29814^2 + 139153^2 .

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 20252432005 - 2¹ = 20252432003 is a prime.

It is a super-2 number, since 2×20252432005² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252432003) 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, 155787874 + ... + 155788003.

It is an arithmetic number, because the mean of its divisors is an integer number (3271546719).

Almost surely, 2^20252432005 is an apocalyptic number.

It is an amenable number.

20252432005 is a deficient number, since it is larger than the sum of its proper divisors (5919941747).

20252432005 is a wasteful number, since it uses less digits than its factorization.

20252432005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311575895.

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 20252432005 its reverse (50023425202), we get a palindrome (70275857207).

The spelling of 20252432005 in words is "twenty billion, two hundred fifty-two million, four hundred thirty-two thousand, five".