22154230025 has 6 divisors (see below), whose sum is σ = 27471245262. Its totient is φ = 17723384000.

The previous prime is 22154229991. The next prime is 22154230027. The reversal of 22154230025 is 52003245122.

It can be written as a sum of positive squares in 3 ways, for example, as 1601280256 + 20552949769 = 40016^2 + 143363^2 .

It is not a de Polignac number, because 22154230025 - 2⁶ = 22154229961 is a prime.

It is a super-2 number, since 2×22154230025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22154229976 and 22154230003.

It is not an unprimeable number, because it can be changed into a prime (22154230027) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 443084576 + ... + 443084625.

It is an arithmetic number, because the mean of its divisors is an integer number (4578540877).

Almost surely, 2^22154230025 is an apocalyptic number.

22154230025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22154230025 is a deficient number, since it is larger than the sum of its proper divisors (5317015237).

22154230025 is an equidigital number, since it uses as much as digits as its factorization.

22154230025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886169211 (or 886169206 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 22154230025 its reverse (52003245122), we get a palindrome (74157475147).

The spelling of 22154230025 in words is "twenty-two billion, one hundred fifty-four million, two hundred thirty thousand, twenty-five".