125523543 has 16 divisors (see below), whose sum is σ = 170783712. Its totient is φ = 81984000.

The previous prime is 125523539. The next prime is 125523547. The reversal of 125523543 is 345325521.

It is an interprime number because it is at equal distance from previous prime (125523539) and next prime (125523547).

It is not a de Polignac number, because 125523543 - 2² = 125523539 is a prime.

It is a super-3 number, since 3×125523543³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125523543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125523547) 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, 50203 + ... + 52643.

It is an arithmetic number, because the mean of its divisors is an integer number (10673982).

Almost surely, 2^125523543 is an apocalyptic number.

125523543 is a deficient number, since it is larger than the sum of its proper divisors (45260169).

125523543 is a wasteful number, since it uses less digits than its factorization.

125523543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786.

The product of its digits is 18000, while the sum is 30.

The square root of 125523543 is about 11203.7289774432. The cubic root of 125523543 is about 500.6970850266.

The spelling of 125523543 in words is "one hundred twenty-five million, five hundred twenty-three thousand, five hundred forty-three".