125083209 has 4 divisors (see below), whose sum is σ = 166777616. Its totient is φ = 83388804.

The previous prime is 125083201. The next prime is 125083219. The reversal of 125083209 is 902380521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125083209 - 2³ = 125083201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125083201) 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, 20847199 + ... + 20847204.

It is an arithmetic number, because the mean of its divisors is an integer number (41694404).

Almost surely, 2^125083209 is an apocalyptic number.

It is an amenable number.

125083209 is a deficient number, since it is larger than the sum of its proper divisors (41694407).

125083209 is an equidigital number, since it uses as much as digits as its factorization.

125083209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41694406.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 125083209 is about 11184.0604880339. The cubic root of 125083209 is about 500.1109207247.

The spelling of 125083209 in words is "one hundred twenty-five million, eighty-three thousand, two hundred nine".