144525257 has 4 divisors (see below), whose sum is σ = 146560896. Its totient is φ = 142489620.

The previous prime is 144525253. The next prime is 144525259. The reversal of 144525257 is 752525441.

144525257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752525441 = 67 ⋅11231723.

It is a cyclic number.

It is not a de Polignac number, because 144525257 - 2² = 144525253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144525253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017713 + ... + 1017854.

It is an arithmetic number, because the mean of its divisors is an integer number (36640224).

Almost surely, 2^144525257 is an apocalyptic number.

It is an amenable number.

144525257 is a deficient number, since it is larger than the sum of its proper divisors (2035639).

144525257 is an equidigital number, since it uses as much as digits as its factorization.

144525257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035638.

The product of its digits is 56000, while the sum is 35.

The square root of 144525257 is about 12021.8657869733. The cubic root of 144525257 is about 524.7848031107.

The spelling of 144525257 in words is "one hundred forty-four million, five hundred twenty-five thousand, two hundred fifty-seven".