125644523 has 4 divisors (see below), whose sum is σ = 127235040. Its totient is φ = 124054008.

The previous prime is 125644517. The next prime is 125644573. The reversal of 125644523 is 325446521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325446521 = 17 ⋅19143913.

It is a cyclic number.

It is not a de Polignac number, because 125644523 - 2⁴ = 125644507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125644523.

It is not an unprimeable number, because it can be changed into a prime (125644573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795140 + ... + 795297.

It is an arithmetic number, because the mean of its divisors is an integer number (31808760).

Almost surely, 2^125644523 is an apocalyptic number.

125644523 is a deficient number, since it is larger than the sum of its proper divisors (1590517).

125644523 is an equidigital number, since it uses as much as digits as its factorization.

125644523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590516.

The product of its digits is 28800, while the sum is 32.

The square root of 125644523 is about 11209.1267724118. The cubic root of 125644523 is about 500.8578912035.

The spelling of 125644523 in words is "one hundred twenty-five million, six hundred forty-four thousand, five hundred twenty-three".