20001250424 has 16 divisors (see below), whose sum is σ = 37515020400. Its totient is φ = 9997244992.

The previous prime is 20001250403. The next prime is 20001250427. The reversal of 20001250424 is 42405210002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001250396 and 20001250405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001250427) 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, 397292 + ... + 444795.

It is an arithmetic number, because the mean of its divisors is an integer number (2344688775).

Almost surely, 2^20001250424 is an apocalyptic number.

It is an amenable number.

20001250424 is a deficient number, since it is larger than the sum of its proper divisors (17513769976).

20001250424 is a wasteful number, since it uses less digits than its factorization.

20001250424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845062 (or 845058 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20001250424 its reverse (42405210002), we get a palindrome (62406460426).

The spelling of 20001250424 in words is "twenty billion, one million, two hundred fifty thousand, four hundred twenty-four".