140171825 has 12 divisors (see below), whose sum is σ = 178053708. Its totient is φ = 109401600.

The previous prime is 140171809. The next prime is 140171869. The reversal of 140171825 is 528171041.

It can be written as a sum of positive squares in 6 ways, for example, as 50225569 + 89946256 = 7087^2 + 9484^2 .

It is not a de Polignac number, because 140171825 - 2⁴ = 140171809 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 67352 + ... + 69401.

It is an arithmetic number, because the mean of its divisors is an integer number (14837809).

Almost surely, 2^140171825 is an apocalyptic number.

It is an amenable number.

140171825 is a deficient number, since it is larger than the sum of its proper divisors (37881883).

140171825 is a wasteful number, since it uses less digits than its factorization.

140171825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136804 (or 136799 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 140171825 is about 11839.4182711821. The cubic root of 140171825 is about 519.4617519809.

The spelling of 140171825 in words is "one hundred forty million, one hundred seventy-one thousand, eight hundred twenty-five".