142812189025 has 27 divisors (see below), whose sum is σ = 194677806099. Its totient is φ = 103848294000.

The previous prime is 142812189001. The next prime is 142812189031. The reversal of 142812189025 is 520981218241.

The square root of 142812189025 is 377905.

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

It can be written as a sum of positive squares in only one way, i.e., 51412388049 + 91399800976 = 226743^2 + 302324^2 .

It is not a de Polignac number, because 142812189025 - 2⁹ = 142812188513 is a prime.

It is a super-2 number, since 2×142812189025² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20781340 + ... + 20788210.

Almost surely, 2^142812189025 is an apocalyptic number.

142812189025 is the 377905-th square number.

142812189025 is the 188953-rd centered octagonal number.

It is an amenable number.

142812189025 is a deficient number, since it is larger than the sum of its proper divisors (51865617074).

142812189025 is an frugal number, since it uses more digits than its factorization.

142812189025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774 (or 6887 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 142812189025 in words is "one hundred forty-two billion, eight hundred twelve million, one hundred eighty-nine thousand, twenty-five".