125436533 has 4 divisors (see below), whose sum is σ = 125796300. Its totient is φ = 125076768.

The previous prime is 125436527. The next prime is 125436541. The reversal of 125436533 is 335634521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335634521 = 113 ⋅2970217.

It can be written as a sum of positive squares in 2 ways, for example, as 50665924 + 74770609 = 7118^2 + 8647^2 .

It is a cyclic number.

It is not a de Polignac number, because 125436533 - 2⁸ = 125436277 is a prime.

It is a super-2 number, since 2×125436533² = 31468647622120178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125436533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125436133) 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, 179360 + ... + 180057.

It is an arithmetic number, because the mean of its divisors is an integer number (31449075).

Almost surely, 2^125436533 is an apocalyptic number.

It is an amenable number.

125436533 is a deficient number, since it is larger than the sum of its proper divisors (359767).

125436533 is an equidigital number, since it uses as much as digits as its factorization.

125436533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359766.

The product of its digits is 32400, while the sum is 32.

The square root of 125436533 is about 11199.8452221448. The cubic root of 125436533 is about 500.5813677611.

The spelling of 125436533 in words is "one hundred twenty-five million, four hundred thirty-six thousand, five hundred thirty-three".