142166323225 has 12 divisors (see below), whose sum is σ = 176663741904. Its totient is φ = 113489509520.

The previous prime is 142166323223. The next prime is 142166323231. The reversal of 142166323225 is 522323661241.

It is not a de Polignac number, because 142166323225 - 2¹ = 142166323223 is a prime.

It is a super-2 number, since 2×142166323225² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142166323223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6076819 + ... + 6100168.

It is an arithmetic number, because the mean of its divisors is an integer number (14721978492).

Almost surely, 2^142166323225 is an apocalyptic number.

It is an amenable number.

142166323225 is a deficient number, since it is larger than the sum of its proper divisors (34497418679).

142166323225 is a wasteful number, since it uses less digits than its factorization.

142166323225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12177464 (or 12177459 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

Adding to 142166323225 its reverse (522323661241), we get a palindrome (664489984466).

The spelling of 142166323225 in words is "one hundred forty-two billion, one hundred sixty-six million, three hundred twenty-three thousand, two hundred twenty-five".