140440925 has 6 divisors (see below), whose sum is σ = 174146778. Its totient is φ = 112352720.

The previous prime is 140440903. The next prime is 140440931. The reversal of 140440925 is 529044041.

It can be written as a sum of positive squares in 3 ways, for example, as 46389721 + 94051204 = 6811^2 + 9698^2 .

It is not a de Polignac number, because 140440925 - 2⁸ = 140440669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2808794 + ... + 2808843.

It is an arithmetic number, because the mean of its divisors is an integer number (29024463).

Almost surely, 2^140440925 is an apocalyptic number.

It is an amenable number.

140440925 is a deficient number, since it is larger than the sum of its proper divisors (33705853).

140440925 is an equidigital number, since it uses as much as digits as its factorization.

140440925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617647 (or 5617642 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 140440925 is about 11850.7774006603. Note that the first 3 decimals coincide. The cubic root of 140440925 is about 519.7939580641.

Adding to 140440925 its reverse (529044041), we get a palindrome (669484966).

The spelling of 140440925 in words is "one hundred forty million, four hundred forty thousand, nine hundred twenty-five".