22197510225 has 72 divisors (see below), whose sum is σ = 43445656800. Its totient is φ = 10744300800.

The previous prime is 22197510173. The next prime is 22197510239. The reversal of 22197510225 is 52201579122.

It is a de Polignac number, because none of the positive numbers 2^k-22197510225 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22197510225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1524781 + ... + 1539269.

It is an arithmetic number, because the mean of its divisors is an integer number (603411900).

Almost surely, 2^22197510225 is an apocalyptic number.

22197510225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22197510225 is a deficient number, since it is larger than the sum of its proper divisors (21248146575).

22197510225 is a wasteful number, since it uses less digits than its factorization.

22197510225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15135 (or 15127 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 22197510225 in words is "twenty-two billion, one hundred ninety-seven million, five hundred ten thousand, two hundred twenty-five".