140666725 has 24 divisors (see below), whose sum is σ = 177845760. Its totient is φ = 110352000.

The previous prime is 140666719. The next prime is 140666741. The reversal of 140666725 is 527666041.

It is a happy number.

It is not a de Polignac number, because 140666725 - 2⁹ = 140666213 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 424810 + ... + 425140.

It is an arithmetic number, because the mean of its divisors is an integer number (7410240).

Almost surely, 2^140666725 is an apocalyptic number.

It is an amenable number.

140666725 is a deficient number, since it is larger than the sum of its proper divisors (37179035).

140666725 is a wasteful number, since it uses less digits than its factorization.

140666725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 140666725 is about 11860.3003756229. The cubic root of 140666725 is about 520.0723826755.

The spelling of 140666725 in words is "one hundred forty million, six hundred sixty-six thousand, seven hundred twenty-five".