145442544225 has 96 divisors (see below), whose sum is σ = 271062650880. Its totient is φ = 68173536000.

The previous prime is 145442544223. The next prime is 145442544227. The reversal of 145442544225 is 522445244541.

It is an interprime number because it is at equal distance from previous prime (145442544223) and next prime (145442544227).

It is not a de Polignac number, because 145442544225 - 2¹ = 145442544223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145442544223) 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 95 ways as a sum of consecutive naturals, for example, 32196667 + ... + 32201183.

It is an arithmetic number, because the mean of its divisors is an integer number (2823569280).

Almost surely, 2^145442544225 is an apocalyptic number.

145442544225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145442544225 is a deficient number, since it is larger than the sum of its proper divisors (125620106655).

145442544225 is a wasteful number, since it uses less digits than its factorization.

145442544225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831 (or 5826 counting only the distinct ones).

The product of its digits is 1024000, while the sum is 42.

Adding to 145442544225 its reverse (522445244541), we get a palindrome (667887788766).

The spelling of 145442544225 in words is "one hundred forty-five billion, four hundred forty-two million, five hundred forty-four thousand, two hundred twenty-five".