422515515225 has 48 divisors (see below), whose sum is σ = 724957171200. Its totient is φ = 216875742720.

The previous prime is 422515515217. The next prime is 422515515271. The reversal of 422515515225 is 522515515224.

It is not a de Polignac number, because 422515515225 - 2³ = 422515515217 is a prime.

It is a super-4 number, since 4×422515515225⁴ (a number of 48 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 370456 + ... + 991094.

It is an arithmetic number, because the mean of its divisors is an integer number (15103274400).

Almost surely, 2^422515515225 is an apocalyptic number.

It is an amenable number.

422515515225 is a deficient number, since it is larger than the sum of its proper divisors (302441655975).

422515515225 is a wasteful number, since it uses less digits than its factorization.

422515515225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620994 (or 620989 counting only the distinct ones).

The product of its digits is 200000, while the sum is 39.

Subtracting 422515515225 from its reverse (522515515224), we obtain a palindrome (99999999999).

The spelling of 422515515225 in words is "four hundred twenty-two billion, five hundred fifteen million, five hundred fifteen thousand, two hundred twenty-five".