140725009 has 4 divisors (see below), whose sum is σ = 142040304. Its totient is φ = 139409716.

The previous prime is 140725007. The next prime is 140725037. The reversal of 140725009 is 900527041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900527041 = 10909 ⋅82549.

It is a cyclic number.

It is not a de Polignac number, because 140725009 - 2¹ = 140725007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140725007) 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 3 ways as a sum of consecutive naturals, for example, 657487 + ... + 657700.

It is an arithmetic number, because the mean of its divisors is an integer number (35510076).

Almost surely, 2^140725009 is an apocalyptic number.

It is an amenable number.

140725009 is a deficient number, since it is larger than the sum of its proper divisors (1315295).

140725009 is a wasteful number, since it uses less digits than its factorization.

140725009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315294.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 140725009 is about 11862.7572258729. The cubic root of 140725009 is about 520.1442018714.

The spelling of 140725009 in words is "one hundred forty million, seven hundred twenty-five thousand, nine".