140249825 has 6 divisors (see below), whose sum is σ = 173909814. Its totient is φ = 112199840.

The previous prime is 140249821. The next prime is 140249839. The reversal of 140249825 is 528942041.

It can be written as a sum of positive squares in 3 ways, for example, as 8620096 + 131629729 = 2936^2 + 11473^2 .

It is not a de Polignac number, because 140249825 - 2² = 140249821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140249821) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2804972 + ... + 2805021.

It is an arithmetic number, because the mean of its divisors is an integer number (28984969).

Almost surely, 2^140249825 is an apocalyptic number.

It is an amenable number.

140249825 is a deficient number, since it is larger than the sum of its proper divisors (33659989).

140249825 is an equidigital number, since it uses as much as digits as its factorization.

140249825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610003 (or 5609998 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 140249825 is about 11842.7118938189. The cubic root of 140249825 is about 519.5580873260.

The spelling of 140249825 in words is "one hundred forty million, two hundred forty-nine thousand, eight hundred twenty-five".