142544225 has 24 divisors (see below), whose sum is σ = 185732160. Its totient is φ = 108313920.

The previous prime is 142544221. The next prime is 142544243. The reversal of 142544225 is 522445241.

142544225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142544225 - 2² = 142544221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142544221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89486 + ... + 91064.

It is an arithmetic number, because the mean of its divisors is an integer number (7738840).

Almost surely, 2^142544225 is an apocalyptic number.

It is an amenable number.

142544225 is a deficient number, since it is larger than the sum of its proper divisors (43187935).

142544225 is a wasteful number, since it uses less digits than its factorization.

142544225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1764 counting only the distinct ones).

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

The square root of 142544225 is about 11939.1886240230. The cubic root of 142544225 is about 522.3759921821.

Adding to 142544225 its reverse (522445241), we get a palindrome (664989466).

The spelling of 142544225 in words is "one hundred forty-two million, five hundred forty-four thousand, two hundred twenty-five".