142165225 has 12 divisors (see below), whose sum is σ = 181972480. Its totient is φ = 110062800.

The previous prime is 142165207. The next prime is 142165249. The reversal of 142165225 is 522561241.

It is not a de Polignac number, because 142165225 - 2⁷ = 142165097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142165193 and 142165202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90945 + ... + 92494.

Almost surely, 2^142165225 is an apocalyptic number.

It is an amenable number.

142165225 is a deficient number, since it is larger than the sum of its proper divisors (39807255).

142165225 is a wasteful number, since it uses less digits than its factorization.

142165225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183480 (or 183475 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 142165225 is about 11923.3059593386. The cubic root of 142165225 is about 521.9126126572.

The spelling of 142165225 in words is "one hundred forty-two million, one hundred sixty-five thousand, two hundred twenty-five".