125712133 has 4 divisors (see below), whose sum is σ = 125738028. Its totient is φ = 125686240.

The previous prime is 125712101. The next prime is 125712157. The reversal of 125712133 is 331217521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331217521 = 4391 ⋅75431.

It can be written as a sum of positive squares in 2 ways, for example, as 81396484 + 44315649 = 9022^2 + 6657^2 .

It is a cyclic number.

It is not a de Polignac number, because 125712133 - 2⁵ = 125712101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125712098 and 125712107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125712173) 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, 3238 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (31434507).

Almost surely, 2^125712133 is an apocalyptic number.

It is an amenable number.

125712133 is a deficient number, since it is larger than the sum of its proper divisors (25895).

125712133 is an equidigital number, since it uses as much as digits as its factorization.

125712133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25894.

The product of its digits is 1260, while the sum is 25.

The square root of 125712133 is about 11212.1422127977. The cubic root of 125712133 is about 500.9477132111.

Adding to 125712133 its reverse (331217521), we get a palindrome (456929654).

The spelling of 125712133 in words is "one hundred twenty-five million, seven hundred twelve thousand, one hundred thirty-three".