20125225424 has 10 divisors (see below), whose sum is σ = 38992624290. Its totient is φ = 10062612704.

The previous prime is 20125225403. The next prime is 20125225501. The reversal of 20125225424 is 42452252102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10953715600 + 9171509824 = 104660^2 + 95768^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 628913279 + ... + 628913310.

It is an arithmetic number, because the mean of its divisors is an integer number (3899262429).

Almost surely, 2^20125225424 is an apocalyptic number.

It is an amenable number.

20125225424 is a deficient number, since it is larger than the sum of its proper divisors (18867398866).

20125225424 is a wasteful number, since it uses less digits than its factorization.

20125225424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257826597 (or 1257826591 counting only the distinct ones).

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

Adding to 20125225424 its reverse (42452252102), we get a palindrome (62577477526).

The spelling of 20125225424 in words is "twenty billion, one hundred twenty-five million, two hundred twenty-five thousand, four hundred twenty-four".