144525440 has 32 divisors (see below), whose sum is σ = 345507660. Its totient is φ = 57809920.

The previous prime is 144525421. The next prime is 144525461. The reversal of 144525440 is 44525441.

It can be written as a sum of positive squares in 2 ways, for example, as 132526144 + 11999296 = 11512^2 + 3464^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112271 + ... + 113550.

Almost surely, 2^144525440 is an apocalyptic number.

144525440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144525440 is an abundant number, since it is smaller than the sum of its proper divisors (200982220).

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

144525440 is an equidigital number, since it uses as much as digits as its factorization.

144525440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225840 (or 225828 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 144525440 is about 12021.8733981023. The cubic root of 144525440 is about 524.7850246074.

Subtracting from 144525440 its reverse (44525441), we obtain a palindrome (99999999).

The spelling of 144525440 in words is "one hundred forty-four million, five hundred twenty-five thousand, four hundred forty".