120725105 has 4 divisors (see below), whose sum is σ = 144870132. Its totient is φ = 96580080.

The previous prime is 120725081. The next prime is 120725113. The reversal of 120725105 is 501527021.

It is a happy number.

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 79405921 + 41319184 = 8911^2 + 6428^2 .

It is not a de Polignac number, because 120725105 - 2¹⁶ = 120659569 is a prime.

It is a super-2 number, since 2×120725105² = 29149101954522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12072506 + ... + 12072515.

It is an arithmetic number, because the mean of its divisors is an integer number (36217533).

Almost surely, 2^120725105 is an apocalyptic number.

It is an amenable number.

120725105 is a deficient number, since it is larger than the sum of its proper divisors (24145027).

120725105 is an equidigital number, since it uses as much as digits as its factorization.

120725105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24145026.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 120725105 is about 10987.4976678041. The cubic root of 120725105 is about 494.2338997911.

The spelling of 120725105 in words is "one hundred twenty million, seven hundred twenty-five thousand, one hundred five".