125920159 has 4 divisors (see below), whose sum is σ = 125946304. Its totient is φ = 125894016.

The previous prime is 125920153. The next prime is 125920169. The reversal of 125920159 is 951029521.

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 125920159 - 2⁵ = 125920127 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 (125920153) 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, 3522 + ... + 16255.

It is an arithmetic number, because the mean of its divisors is an integer number (31486576).

Almost surely, 2^125920159 is an apocalyptic number.

125920159 is a deficient number, since it is larger than the sum of its proper divisors (26145).

125920159 is an equidigital number, since it uses as much as digits as its factorization.

125920159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26144.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 125920159 is about 11221.4151959546. The cubic root of 125920159 is about 501.2238804556.

The spelling of 125920159 in words is "one hundred twenty-five million, nine hundred twenty thousand, one hundred fifty-nine".