22155242125 has 32 divisors (see below), whose sum is σ = 29251872000. Its totient is φ = 16706606400.

The previous prime is 22155242117. The next prime is 22155242149. The reversal of 22155242125 is 52124255122.

It is not a de Polignac number, because 22155242125 - 2³ = 22155242117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449187 + ... + 496063.

It is an arithmetic number, because the mean of its divisors is an integer number (914121000).

Almost surely, 2^22155242125 is an apocalyptic number.

22155242125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22155242125 is a deficient number, since it is larger than the sum of its proper divisors (7096629875).

22155242125 is a wasteful number, since it uses less digits than its factorization.

22155242125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47110 (or 47100 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

Adding to 22155242125 its reverse (52124255122), we get a palindrome (74279497247).

The spelling of 22155242125 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty-two thousand, one hundred twenty-five".