125740163 has 4 divisors (see below), whose sum is σ = 126100800. Its totient is φ = 125379528.

The previous prime is 125740141. The next prime is 125740187. The reversal of 125740163 is 361047521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361047521 = 491 ⋅735331.

It is a cyclic number.

It is not a de Polignac number, because 125740163 - 2²⁰ = 124691587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125740133) 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, 179795 + ... + 180492.

It is an arithmetic number, because the mean of its divisors is an integer number (31525200).

Almost surely, 2^125740163 is an apocalyptic number.

125740163 is a deficient number, since it is larger than the sum of its proper divisors (360637).

125740163 is an equidigital number, since it uses as much as digits as its factorization.

125740163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360636.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 125740163 is about 11213.3921272735. The cubic root of 125740163 is about 500.9849425025.

Adding to 125740163 its reverse (361047521), we get a palindrome (486787684).

The spelling of 125740163 in words is "one hundred twenty-five million, seven hundred forty thousand, one hundred sixty-three".