125325209 has 2 divisors, whose sum is σ = 125325210. Its totient is φ = 125325208.

The previous prime is 125325199. The next prime is 125325227. The reversal of 125325209 is 902523521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103469584 + 21855625 = 10172^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 125325209 - 2¹² = 125321113 is a prime.

It is not a weakly prime, because it can be changed into another prime (125325259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62662604 + 62662605.

It is an arithmetic number, because the mean of its divisors is an integer number (62662605).

Almost surely, 2^125325209 is an apocalyptic number.

It is an amenable number.

125325209 is a deficient number, since it is larger than the sum of its proper divisors (1).

125325209 is an equidigital number, since it uses as much as digits as its factorization.

125325209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 125325209 is about 11194.8742288603. The cubic root of 125325209 is about 500.4332365038.

It can be divided in two parts, 1253 and 25209, that added together give a palindrome (26462).

The spelling of 125325209 in words is "one hundred twenty-five million, three hundred twenty-five thousand, two hundred nine".