122525009 has 2 divisors, whose sum is σ = 122525010. Its totient is φ = 122525008.

The previous prime is 122525003. The next prime is 122525021. The reversal of 122525009 is 900525221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 35046400 = 9353^2 + 5920^2 .

It is a cyclic number.

It is not a de Polignac number, because 122525009 - 2⁴ = 122524993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122525003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61262504 + 61262505.

It is an arithmetic number, because the mean of its divisors is an integer number (61262505).

Almost surely, 2^122525009 is an apocalyptic number.

It is an amenable number.

122525009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122525009 is an equidigital number, since it uses as much as digits as its factorization.

122525009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 122525009 is about 11069.1015443892. The cubic root of 122525009 is about 496.6779893720.

The spelling of 122525009 in words is "one hundred twenty-two million, five hundred twenty-five thousand, nine".