125809343 has 4 divisors (see below), whose sum is σ = 137246568. Its totient is φ = 114372120.

The previous prime is 125809309. The next prime is 125809349. The reversal of 125809343 is 343908521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125809343 - 2⁸ = 125809087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125809349) 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, 5718596 + ... + 5718617.

It is an arithmetic number, because the mean of its divisors is an integer number (34311642).

Almost surely, 2^125809343 is an apocalyptic number.

125809343 is a deficient number, since it is larger than the sum of its proper divisors (11437225).

125809343 is a wasteful number, since it uses less digits than its factorization.

125809343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437224.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 125809343 is about 11216.4764074998. The cubic root of 125809343 is about 501.0768033245.

The spelling of 125809343 in words is "one hundred twenty-five million, eight hundred nine thousand, three hundred forty-three".