120725009 has 4 divisors (see below), whose sum is σ = 121392180. Its totient is φ = 120057840.

The previous prime is 120724957. The next prime is 120725023. The reversal of 120725009 is 900527021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6235009 + 114490000 = 2497^2 + 10700^2 .

It is a cyclic number.

It is not a de Polignac number, because 120725009 - 2²⁰ = 119676433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120725609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333314 + ... + 333675.

It is an arithmetic number, because the mean of its divisors is an integer number (30348045).

Almost surely, 2^120725009 is an apocalyptic number.

It is an amenable number.

120725009 is a deficient number, since it is larger than the sum of its proper divisors (667171).

120725009 is an equidigital number, since it uses as much as digits as its factorization.

120725009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667170.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 120725009 is about 10987.4932992016. The cubic root of 120725009 is about 494.2337687870.

The spelling of 120725009 in words is "one hundred twenty million, seven hundred twenty-five thousand, nine".