22542001225 has 12 divisors (see below), whose sum is σ = 28345775040. Its totient is φ = 17779605200.

The previous prime is 22542001133. The next prime is 22542001277. The reversal of 22542001225 is 52210024522.

It is not a de Polignac number, because 22542001225 - 2²¹ = 22539904073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 22542001225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6348085 + ... + 6351634.

It is an arithmetic number, because the mean of its divisors is an integer number (2362147920).

Almost surely, 2^22542001225 is an apocalyptic number.

22542001225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22542001225 is a deficient number, since it is larger than the sum of its proper divisors (5803773815).

22542001225 is a wasteful number, since it uses less digits than its factorization.

22542001225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699800 (or 12699795 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 22542001225 its reverse (52210024522), we get a palindrome (74752025747).

The spelling of 22542001225 in words is "twenty-two billion, five hundred forty-two million, one thousand, two hundred twenty-five".