140639425 has 12 divisors (see below), whose sum is σ = 183572080. Its totient is φ = 106589520.

The previous prime is 140639413. The next prime is 140639431. The reversal of 140639425 is 524936041.

It is a happy number.

It is not a de Polignac number, because 140639425 - 2⁹ = 140638913 is a prime.

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, 147567 + ... + 148516.

Almost surely, 2^140639425 is an apocalyptic number.

It is an amenable number.

140639425 is a deficient number, since it is larger than the sum of its proper divisors (42932655).

140639425 is a wasteful number, since it uses less digits than its factorization.

140639425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296112 (or 296107 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 140639425 is about 11859.1494214383. The cubic root of 140639425 is about 520.0387360197.

The spelling of 140639425 in words is "one hundred forty million, six hundred thirty-nine thousand, four hundred twenty-five".