145524522220 has 384 divisors, whose sum is σ = 420360192000. Its totient is φ = 41034090240.

The previous prime is 145524522167. The next prime is 145524522229. The reversal of 145524522220 is 22225425541.

It is not an unprimeable number, because it can be changed into a prime (145524522229) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 242945481 + ... + 242946079.

It is an arithmetic number, because the mean of its divisors is an integer number (1094688000).

Almost surely, 2^145524522220 is an apocalyptic number.

145524522220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145524522220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210180096000).

145524522220 is an abundant number, since it is smaller than the sum of its proper divisors (274835669780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145524522220 is a wasteful number, since it uses less digits than its factorization.

145524522220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 145524522220 its reverse (22225425541), we get a palindrome (167749947761).

The spelling of 145524522220 in words is "one hundred forty-five billion, five hundred twenty-four million, five hundred twenty-two thousand, two hundred twenty".