142781958225 has 99 divisors (see below), whose sum is σ = 266429621179. Its totient is φ = 75905521200.

The previous prime is 142781958211. The next prime is 142781958227. The reversal of 142781958225 is 522859187241.

It is a happy number.

The square root of 142781958225 is 377865.

It is a perfect power (a square), and thus also a powerful number.

142781958225 is a `hidden beast` number, since 1 + 4 + 27 + 8 + 19 + 582 + 25 = 666.

142781958225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51401504961 + 91380453264 = 226719^2 + 302292^2 .

It is not a de Polignac number, because 142781958225 - 2¹⁵ = 142781925457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142781958227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 98 ways as a sum of consecutive naturals, for example, 459105820 + ... + 459106130.

Almost surely, 2^142781958225 is an apocalyptic number.

142781958225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142781958225 is the 377865-th square number.

142781958225 is the 188933-rd centered octagonal number.

It is an amenable number.

142781958225 is a deficient number, since it is larger than the sum of its proper divisors (123647662954).

142781958225 is an frugal number, since it uses more digits than its factorization.

142781958225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 319 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 142781958225 in words is "one hundred forty-two billion, seven hundred eighty-one million, nine hundred fifty-eight thousand, two hundred twenty-five".