22505002425 has 18 divisors (see below), whose sum is σ = 40308960302. Its totient is φ = 12002667840.

The previous prime is 22505002423. The next prime is 22505002439. The reversal of 22505002425 is 52420050522.

It can be written as a sum of positive squares in 3 ways, for example, as 690007824 + 21814994601 = 26268^2 + 147699^2 .

It is not a de Polignac number, because 22505002425 - 2¹ = 22505002423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22505002423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50010892 + ... + 50011341.

Almost surely, 2^22505002425 is an apocalyptic number.

22505002425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22505002425 is a deficient number, since it is larger than the sum of its proper divisors (17803957877).

22505002425 is a wasteful number, since it uses less digits than its factorization.

22505002425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100022249 (or 100022241 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 22505002425 its reverse (52420050522), we get a palindrome (74925052947).

The spelling of 22505002425 in words is "twenty-two billion, five hundred five million, two thousand, four hundred twenty-five".