25020420322 has 4 divisors (see below), whose sum is σ = 37530630486. Its totient is φ = 12510210160.

The previous prime is 25020420319. The next prime is 25020420331. The reversal of 25020420322 is 22302402052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22506300441 + 2514119881 = 150021^2 + 50141^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25020420293 and 25020420302.

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, 6255105079 + ... + 6255105082.

Almost surely, 2^25020420322 is an apocalyptic number.

25020420322 is a deficient number, since it is larger than the sum of its proper divisors (12510210164).

25020420322 is a wasteful number, since it uses less digits than its factorization.

25020420322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12510210163.

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 25020420322 its reverse (22302402052), we get a palindrome (47322822374).

The spelling of 25020420322 in words is "twenty-five billion, twenty million, four hundred twenty thousand, three hundred twenty-two".