125391306 has 16 divisors (see below), whose sum is σ = 252445248. Its totient is φ = 41520000.

The previous prime is 125391281. The next prime is 125391319. The reversal of 125391306 is 603193521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68295 + ... + 70106.

It is an arithmetic number, because the mean of its divisors is an integer number (15777828).

Almost surely, 2^125391306 is an apocalyptic number.

125391306 is an abundant number, since it is smaller than the sum of its proper divisors (127053942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125391306 is a wasteful number, since it uses less digits than its factorization.

125391306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138557.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 125391306 is about 11197.8259497101. The cubic root of 125391306 is about 500.5211978502.

The spelling of 125391306 in words is "one hundred twenty-five million, three hundred ninety-one thousand, three hundred six".