120625861 has 2 divisors, whose sum is σ = 120625862. Its totient is φ = 120625860.

The previous prime is 120625847. The next prime is 120625891. The reversal of 120625861 is 168526021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92736900 + 27888961 = 9630^2 + 5281^2 .

It is an emirp because it is prime and its reverse (168526021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120625861 - 2⁷ = 120625733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120625801) by changing a digit.

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 as a sum of consecutive naturals, namely, 60312930 + 60312931.

It is an arithmetic number, because the mean of its divisors is an integer number (60312931).

Almost surely, 2^120625861 is an apocalyptic number.

It is an amenable number.

120625861 is a deficient number, since it is larger than the sum of its proper divisors (1).

120625861 is an equidigital number, since it uses as much as digits as its factorization.

120625861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 120625861 is about 10982.9805153246. The cubic root of 120625861 is about 494.0984317071.

The spelling of 120625861 in words is "one hundred twenty million, six hundred twenty-five thousand, eight hundred sixty-one".