22154230442025 has 72 divisors (see below), whose sum is σ = 43429028426784. Its totient is φ = 10706456275200.

The previous prime is 22154230441999. The next prime is 22154230442041. The reversal of 22154230442025 is 52024403245122.

22154230442025 is a `hidden beast` number, since 2 + 2 + 1 + 542 + 30 + 44 + 20 + 25 = 666.

It is not a de Polignac number, because 22154230442025 - 2⁶ = 22154230441961 is a prime.

It is a super-2 number, since 2×22154230442025² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13818684 + ... + 15338333.

It is an arithmetic number, because the mean of its divisors is an integer number (603180950372).

Almost surely, 2^{22154230442025} is an apocalyptic number.

22154230442025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22154230442025 is a deficient number, since it is larger than the sum of its proper divisors (21274797984759).

22154230442025 is a wasteful number, since it uses less digits than its factorization.

22154230442025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29157351 (or 29157343 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 22154230442025 its reverse (52024403245122), we get a palindrome (74178633687147).

The spelling of 22154230442025 in words is "twenty-two trillion, one hundred fifty-four billion, two hundred thirty million, four hundred forty-two thousand, twenty-five".