145501252433250 has 256 divisors, whose sum is σ = 420646702694400. Its totient is φ = 32810325177600.

The previous prime is 145501252433233. The next prime is 145501252433261. The reversal of 145501252433250 is 52334252105541.

It is a super-2 number, since 2×145501252433250² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 308711271 + ... + 309182229.

It is an arithmetic number, because the mean of its divisors is an integer number (1643151182400).

Almost surely, 2^{145501252433250} is an apocalyptic number.

145501252433250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145501252433250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210323351347200).

145501252433250 is an abundant number, since it is smaller than the sum of its proper divisors (275145450261150).

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

145501252433250 is a wasteful number, since it uses less digits than its factorization.

145501252433250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471778 (or 471768 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 145501252433250 in words is "one hundred forty-five trillion, five hundred one billion, two hundred fifty-two million, four hundred thirty-three thousand, two hundred fifty".