144540025 has 24 divisors (see below), whose sum is σ = 207736704. Its totient is φ = 97708800.

The previous prime is 144540023. The next prime is 144540037. The reversal of 144540025 is 520045441.

It is a happy number.

It is not a de Polignac number, because 144540025 - 2¹ = 144540023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144540023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6609 + ... + 18241.

It is an arithmetic number, because the mean of its divisors is an integer number (8655696).

Almost surely, 2^144540025 is an apocalyptic number.

It is an amenable number.

144540025 is a deficient number, since it is larger than the sum of its proper divisors (63196679).

144540025 is a wasteful number, since it uses less digits than its factorization.

144540025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721 (or 11716 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 144540025 is about 12022.4799854273. The cubic root of 144540025 is about 524.8026771677.

Adding to 144540025 its reverse (520045441), we get a palindrome (664585466).

The spelling of 144540025 in words is "one hundred forty-four million, five hundred forty thousand, twenty-five".