22145212325 has 12 divisors (see below), whose sum is σ = 27522628320. Its totient is φ = 17675805360.

The previous prime is 22145212273. The next prime is 22145212373. The reversal of 22145212325 is 52321254122.

It is a happy number.

It is not a de Polignac number, because 22145212325 - 2¹⁰ = 22145211301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997919 + ... + 1019868.

It is an arithmetic number, because the mean of its divisors is an integer number (2293552360).

Almost surely, 2^22145212325 is an apocalyptic number.

22145212325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22145212325 is a deficient number, since it is larger than the sum of its proper divisors (5377415995).

22145212325 is a wasteful number, since it uses less digits than its factorization.

22145212325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018236 (or 2018231 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

Adding to 22145212325 its reverse (52321254122), we get a palindrome (74466466447).

The spelling of 22145212325 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, three hundred twenty-five".