125843523 has 16 divisors (see below), whose sum is σ = 180956160. Its totient is φ = 77331744.

The previous prime is 125843483. The next prime is 125843561. The reversal of 125843523 is 325348521.

It is a Cunningham number, because it is equal to 11218²-1.

It is not a de Polignac number, because 125843523 - 2¹⁶ = 125777987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125843563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31788 + ... + 35526.

It is an arithmetic number, because the mean of its divisors is an integer number (11309760).

Almost surely, 2^125843523 is an apocalyptic number.

125843523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125843523 is a deficient number, since it is larger than the sum of its proper divisors (55112637).

125843523 is a wasteful number, since it uses less digits than its factorization.

125843523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618.

The product of its digits is 28800, while the sum is 33.

The square root of 125843523 is about 11217.9999554288. Note that the first 4 decimals coincide. The cubic root of 125843523 is about 501.1221768872.

The spelling of 125843523 in words is "one hundred twenty-five million, eight hundred forty-three thousand, five hundred twenty-three".