125533 has 4 divisors (see below), whose sum is σ = 132160. Its totient is φ = 118908.

The previous prime is 125527. The next prime is 125539. The reversal of 125533 is 335521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335521 = 19 ⋅17659.

It is an interprime number because it is at equal distance from previous prime (125527) and next prime (125539).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6607 = 125533 / (1 + 2 + 5 + 5 + 3 + 3).

It is an Ulam number.

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 125533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285 + ... + 3322.

It is an arithmetic number, because the mean of its divisors is an integer number (33040).

2¹²⁵⁵³³ is an apocalyptic number.

It is an amenable number.

125533 is a deficient number, since it is larger than the sum of its proper divisors (6627).

125533 is an equidigital number, since it uses as much as digits as its factorization.

125533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626.

The product of its digits is 450, while the sum is 19.

The square root of 125533 is about 354.3063646055. The cubic root of 125533 is about 50.0709658958.

The spelling of 125533 in words is "one hundred twenty-five thousand, five hundred thirty-three".