145845220325 has 48 divisors (see below), whose sum is σ = 207874778496. Its totient is φ = 99432748800.

The previous prime is 145845220321. The next prime is 145845220379. The reversal of 145845220325 is 523022548541.

It is a happy number.

It is not a de Polignac number, because 145845220325 - 2² = 145845220321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145845220321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62512859 + ... + 62515191.

It is an arithmetic number, because the mean of its divisors is an integer number (4330724552).

Almost surely, 2^145845220325 is an apocalyptic number.

It is an amenable number.

145845220325 is a deficient number, since it is larger than the sum of its proper divisors (62029558171).

145845220325 is a wasteful number, since it uses less digits than its factorization.

145845220325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254 (or 4249 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 145845220325 its reverse (523022548541), we get a palindrome (668867768866).

The spelling of 145845220325 in words is "one hundred forty-five billion, eight hundred forty-five million, two hundred twenty thousand, three hundred twenty-five".