145221112225 has 48 divisors (see below), whose sum is σ = 211512256000. Its totient is φ = 96819598080.

The previous prime is 145221112219. The next prime is 145221112241. The reversal of 145221112225 is 522211122541.

145221112225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145221112225 - 2⁷ = 145221112097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145221112193 and 145221112202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10022536 + ... + 10037014.

Almost surely, 2^145221112225 is an apocalyptic number.

It is an amenable number.

145221112225 is a deficient number, since it is larger than the sum of its proper divisors (66291143775).

145221112225 is a wasteful number, since it uses less digits than its factorization.

145221112225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16082 (or 16077 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

Adding to 145221112225 its reverse (522211122541), we get a palindrome (667432234766).

The spelling of 145221112225 in words is "one hundred forty-five billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-five".